March 2019 crawl archive now available

The crawl archive for March 2019 is now available! It contains 2.55 billion web pages or 210 TiB of uncompressed content, crawled between March 18th and 27th.

The March crawl contains page captures of 660 million URLs not contained in any crawl archive before. New URLs are sampled based on the host and domain ranks (harmonic centrality) published as part of the Nov/Dec/Jan 2018/2019 webgraph data set from the following sources:

  • sitemaps, RSS and Atom feeds
  • a breadth-first side crawl within a maximum of 6 links (“hops”) away from the homepages of the top 60 million hosts and domains
  • a random sample of outlinks taken from WAT files of the February crawl

Archive Location and Download

The March crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2019-13/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2019-13/segment.paths.gz100
WARC filesCC-MAIN-2019-13/warc.paths.gz5600049.09
WAT filesCC-MAIN-2019-13/wat.paths.gz5600017.37
WET filesCC-MAIN-2019-13/wet.paths.gz560007.47
Robots.txt filesCC-MAIN-2019-13/robotstxt.paths.gz560000.17
Non-200 responses filesCC-MAIN-2019-13/non200responses.paths.gz560001.63
URL index filesCC-MAIN-2019-13/cc-index.paths.gz3020.19

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2019-13/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

February 2019 crawl archive now available

The crawl archive for February 2019 is now available! It contains 2.9 billion web pages or 225 TiB of uncompressed content, crawled between February 15th and 24th.

The February crawl contains page captures of 750 million URLs not contained in any crawl archive before. New URLs are sampled based on the host and domain ranks (harmonic centrality) published as part of the Nov/Dec/Jan 2018/2019 webgraph data set from the following sources:

  • sitemaps, RSS and Atom feeds
  • a breadth-first side crawl within a maximum of 5 links (“hops”) away from the homepages of the top 50 million hosts and domains
  • a random sample of outlinks taken from WAT files of the January crawl

The number of sampled URLs per domain depends on the domain’s harmonic centrality rank in the webgraph data set – higher ranking domain are allowed to “contribute” more URLs.

The way our crawler handles politeness limits per host and/or pay-level domain has been improved:
First, limits are now configurable and are based on the harmonic centrality rank of a domain.
Second, we now also put a limit on the number of hosts/subdomains per domain. This limit is also based on the domain rank and ranges from 500,000 subdomains for top-ranking domains (think of blogspot.com) to less than 100 for low-ranking domains. While the the number of hosts covered in the February crawl dropped to 50 millions from 60 millions in January, we see a positive impact on the total amount of pages crawled for large domains. Technically, every host requires a DNS lookup and a robots.txt fetch even if only a single page is fetched from this host and the performance of the crawler improves if resources are focused on few 100,000 subdomains and not spread over millions of hosts. We also hope that a limit on the number of hosts per domain makes the crawler more robust against link spam. The set of sampled subdomains for large domains will vary from month to month to guarantee a good overall coverage if multiple monthly crawls are combined.

Archive Location and Download

The February crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2019-09/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2019-09/segment.paths.gz100
WARC filesCC-MAIN-2019-09/warc.paths.gz6400059.86
WAT filesCC-MAIN-2019-09/wat.paths.gz6400018.23
WET filesCC-MAIN-2019-09/wet.paths.gz640007.62
Robots.txt filesCC-MAIN-2019-09/robotstxt.paths.gz640000.17
Non-200 responses filesCC-MAIN-2019-09/non200responses.paths.gz640001.79
URL index filesCC-MAIN-2019-09/cc-index.paths.gz3020.21

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2019-09/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

Host- and Domain-Level Web Graphs Nov/Dec/Jan 2018 – 2019

We are pleased to announce a new release of host-level and domain-level web graphs based on the published crawls of November, December 2018 and January 2019. Additional information about the data formats, the processing pipeline, our objectives, and credits can be found in the announcements of prior webgraph releases (e.g., Nov/Dec/Jan 2017-2018 Webgraphs). You may also visit the projects cc-webgraph and cc-pyspark which host all scripts and tools required to construct the graphs.

Host-level graph

The graph consists of 407 million nodes and 4.2 billion edges and includes dangling nodes i.e. hosts that have not been crawled yet are pointed to from a link on a crawled page. There are 323 million dangling nodes (79%) and the largest strongly connected component contains 63 million (15%) nodes.

You can download the graph and the ranks of all 407 million hosts from AWS S3 on the path s3://commoncrawl/projects/hyperlinkgraph/cc-main-2018-19-nov-dec-jan/host/. Alternatively, you can use https://commoncrawl.s3.amazonaws.com/projects/hyperlinkgraph/cc-main-2018-19-nov-dec-jan/host/ as prefix to access the files from everywhere.

Download files of the Common Crawl Nov/Dec/Jan 2018-19 host-level webgraph

SizeFileDescription
2.90 GBcc-main-2018-19-nov-dec-jan-host-vertices.paths.gznodes ⟨id, rev host⟩, paths of 42 vertices files
18.84 GBcc-main-2018-19-nov-dec-jan-host-edges.paths.gzedges ⟨from_id, to_id⟩, paths of 84 edges files
7.81 GBcc-main-2018-19-nov-dec-jan-host.graphgraph in BVGraph format
2 kBcc-main-2018-19-nov-dec-jan-host.properties
8.16 GBcc-main-2018-19-nov-dec-jan-host-t.graphtranspose of the graph (outlinks inverted to inlinks)
2 kBcc-main-2018-19-nov-dec-jan-host-t.properties
1 kBcc-main-2018-19-nov-dec-jan-host.statsWebGraph statistics
7.50 GBcc-main-2018-19-nov-dec-jan-host-ranks.txt.gzharmonic centrality and pagerank

Note that the host names are reversed and a leading www. is stripped: www.subdomain.example.com becomes com.example.subdomain.

Domain-level graph

The domain graph was built by aggregating the host graph on the level of pay-level domains (PLDs) based on the public suffix list maintained on publicsuffix.org.

The domain-level graph has 90 million nodes and 1.69 billion edges. 53% or 48 million nodes are dangling nodes, the largest strongly connected component covers 37 million or 41% of the nodes.

All files related to the domain graph are available on AWS S3 under s3://commoncrawl/projects/hyperlinkgraph/cc-main-2018-19-nov-dec-jan/domain/ resp. https://commoncrawl.s3.amazonaws.com/projects/hyperlinkgraph/cc-main-2018-19-nov-dec-jan/domain/.

Download files of the Common Crawl Nov/Dec/Jan 2018-19 domain-level webgraph

SizeFileDescription
0.62 GBcc-main-2018-19-nov-dec-jan-domain-vertices.txt.gznodes ⟨id, rev domain, num hosts⟩
6.76 GBcc-main-2018-19-nov-dec-jan-domain-edges.txt.gzedges ⟨from_id, to_id⟩
3.68 GBcc-main-2018-19-nov-dec-jan-domain.graphgraph in BVGraph format
2 kBcc-main-2018-19-nov-dec-jan-domain.properties
3.82 GBcc-main-2018-19-nov-dec-jan-domain-t.graphtranspose of the graph
2 kBcc-main-2018-19-nov-dec-jan-domain-t.properties
1 kBcc-main-2018-19-nov-dec-jan-domain.statsWebGraph statistics
1.96 GBcc-main-2018-19-nov-dec-jan-domain-ranks.txt.gzharmonic centrality and pagerank

Below you’ll find the top 1000 domains ranked by Harmonic Centrality or PageRank. The full list of all 90 million domain ranks is available for download.

Top 1000 domains ranked by harmonic centrality (Nov/Dec/Jan 2018-2019)

harmonic
centrality
rank
hc valuepage rankpage rank
value
reversed hostname
12720328820.012818com.facebook
22708181610.017236com.googleapis
32553310830.010690com.google
42426790640.007625com.twitter
52400138450.006755com.youtube
62318722660.006532org.w
72160578680.003925com.instagram
82138665870.004753org.gmpg
920954100110.003053com.linkedin
1020252174120.002871org.wordpress
1120166276150.002217com.wordpress
1220071538240.001532com.gravatar
1320054574220.001673com.pinterest
1420035420270.001366org.wikipedia
1519689680210.001831com.apple
1619669598130.002776com.bootstrapcdn
1719590352360.000986com.blogspot
1819579602280.001308com.vimeo
1919357866410.000827be.youtu
2019345240140.002221com.cloudflare
2119288382370.000940gl.goo
2219267938290.001236com.microsoft
2319181584250.001444com.adobe
2419148714420.000817com.amazon
2519143492170.002000com.googletagmanager
2619087530490.000656com.tumblr
2719040054230.001572com.macromedia
2819024404510.000647com.wp
2919009908160.002181com.flickr
3018980982710.000509ly.bit
3118864572740.000479com.yahoo
3218847172390.000879com.amazonaws
3318818456380.000888com.paypal
3418798784200.001840com.github
3518762366650.000584org.mozilla
3618761330260.001413com.gstatic
3718756286640.000596me.wp
3818648308970.000312com.googleusercontent
3918645512400.000867net.cloudfront
4018636726850.000364com.soundcloud
41186286241090.000267com.nytimes
4218621690810.000425com.weebly
4318599952540.000633net.doubleclick
4418588240440.000760org.w3
4518584910870.000346co.t
46185756341010.000303com.reddit
4718568330680.000521com.medium
48185605521500.000157org.wikimedia
49185521041110.000257com.dropbox
5018520572830.000402org.creativecommons
51185093761340.000192org.archive
5218508730330.001034io.github
5318458414770.000443com.bing
54184430421460.000176net.slideshare
55184423421240.000215com.imgur
5618429066310.001176ru.yandex
5718423958820.000417de.google
5818405610300.001179net.fbcdn
59183989441580.000150edu.stanford
60183792942410.000099com.bbc
61183757502150.000111com.tinyurl
6218368156340.001028org.apache
6318362114940.000316com.mailchimp
64183382961830.000127com.wired
65183223341360.000190com.blogger
6618280996630.000599eu.europa
67182778041300.000200com.issuu
68182718242190.000109com.bloomberg
69182574221820.000127com.myspace
7018254210800.000425com.jquery
7118249798780.000433com.baidu
72182303643470.000069com.appspot
73182207681370.000188com.eventbrite
74182148201250.000212com.yelp
75182091941380.000185com.spotify
76182086441430.000180org.ietf
77182020761890.000125com.oracle
78182006281720.000139com.android
79181960042480.000095org.npr
80181949383310.000072com.theverge
8118188710320.001108com.squarespace
82181800643070.000077com.googleblog
83181686961730.000139org.gnu
84181682821150.000241com.youtube-nocookie
85181664003520.000068com.quora
8618166372840.000388com.statcounter
87181622703550.000068com.deviantart
88181476903140.000076com.buzzfeed
89181321482810.000083org.python
90181305442840.000082me.about
91181228524260.000057com.slate
92181208744430.000055org.ieee
93181098883570.000068uk.co.independent
94181042201170.000228com.whatsapp
95180942922790.000085com.w3schools
9618092538720.000495org.schema
97180870664480.000054edu.upenn
9818080120450.000737com.fontawesome
99180765784760.000051edu.ucla
100180723664240.000057edu.washington
101180720786410.000045org.chromium
102180686244680.000052uk.ac.ox
103180674043860.000063com.newyorker
104180667281860.000125net.behance
105180577002820.000083com.example
106180540904000.000061org.arxiv
107180529301040.000285com.ytimg
108180498521920.000123com.dribbble
109180291322220.000109gov.ca
110180267161400.000184com.forbes
111180250303740.000065gov.loc
112180134542280.000103com.fastcompany
113180081562530.000092com.foursquare
114180070623800.000064com.about
115180054981790.000132com.cnn
116180052621570.000150com.theguardian
117180052544660.000052com.evernote
118180027083790.000064com.git-scm
119180018923370.000071au.com.google
120180013164900.000050edu.princeton
121179975762470.000096com.typeform
122179950204690.000052com.withgoogle
123179911206480.000044com.storify
124179869525250.000047com.stackexchange
125179854826520.000044google.blog
1261798224490.003675com.godaddy
127179767822290.000103com.nbcnews
128179749721610.000148uk.co.bbc
129179732943320.000072uk.co.blogspot
130179711883960.000061com.tandfonline
131179575024080.000060com.mysql
132179460286320.000045ca.blogspot
133179435224790.000051com.libsyn
134179402781960.000120es.google
135179349264910.000050com.tinypic
136179335224820.000051com.ubuntu
137179325347480.000039com.nike
138179312944020.000061org.bitbucket
139179309762760.000085org.doi
140179296343360.000072com.getpocket
141179275966760.000043com.jetbrains
142179097102780.000085com.mozilla
143179090406970.000041com.sap
144179005944490.000054com.googlecode
14517899774730.000484com.list-manage
146178952401850.000126com.huffingtonpost
147178941466350.000045tv.ustream
14817893688860.000351com.paypalobjects
149178904464590.000053com.trello
150178868182690.000086edu.mit
151178820641520.000154net.sourceforge
152178798782450.000096com.githubusercontent
153178775544980.000049com.chrome
154178643689530.000033edu.gatech
155178596704470.000054com.docker
156178587947190.000040com.ssrn
157178585745970.000045co.g
15817857678900.000329com.wix
159178566262050.000116com.washingtonpost
1601784955410820.000029com.diigo
161178473143600.000067gov.fda
162178451281270.000205org.bbb
163178403189610.000033com.flipboard
164178390929390.000034it.scoop
165178382388190.000037com.nvidia
166178367022970.000080com.reuters
167178363562960.000080com.mapquest
168178309965700.000046com.pingdom
169178303622770.000085com.go
170178279801990.000119org.debian
171178222381980.000119com.wsj
172178222068980.000035com.fastcodesign
17317819482350.001004com.fb
174178159788140.000037site.business
175178149322340.000101com.techcrunch
176178078842500.000094com.usatoday
177178073441480.000171gov.nih
178178071561530.000154com.etsy
179178043865430.000047org.eclipse
1801779656010250.000031com.hbo
18117791748460.000708net.akamaihd
182177909862000.000118com.live
183177902109770.000032ms.1drv
184177895409750.000033nl.blogspot
185177822962160.000111com.businessinsider
186177798064150.000059com.unity3d
187177727764710.000052com.cdbaby
188177698467100.000041se.haxx
189177689301630.000142org.iana
19017766540980.000311com.shopify
191177656102830.000082com.herokuapp
192177626142800.000084edu.harvard
193177605702930.000080net.windows
194177602147470.000039org.unicode
195177581781100.000264com.jimdo
196177581683440.000070com.msn
197177578642870.000081uk.co.telegraph
198177568962090.000112com.typepad
199177553261470.000174com.opera
2001775232410840.000029com.creativebloq
201177507928520.000036edu.rutgers
202177501906620.000043gov.wa
203177500429440.000034com.history
204177487563620.000066gov.nasa
205177487048440.000037edu.illinois
206177439985090.000049au.gov.nsw
207177375546310.000045gov.dot
2081773056010240.000031edu.pitt
209177303901910.000124com.imdb
21017727110950.000315net.jsdelivr
211177265783730.000065com.mashable
21217721654670.000526com.vk
21317719938470.000677net.facebook
214177190501950.000121uk.co.amazon
215177176261050.000279com.google-analytics
216177159863130.000076com.cnet
2171771261611920.000027org.wikibooks
218177113462380.000100com.ibm
219177086749060.000035ca.utoronto
220177060483720.000065com.ted
221177031649300.000034au.com.blogspot
222176966348090.000038com.ecwid
223176928044220.000058uk.co.pinterest
224176888509540.000033com.theknot
225176833809710.000033edu.osu
226176768923680.000066com.latimes
227176759482310.000103net.php
2281767486610230.000031com.dw
229176737229720.000033org.hrw
230176691761810.000128com.stackoverflow
2311766639610630.000030io.itch
232176632362620.000090com.npmjs
233176546049170.000035us.mn.state
234176544823870.000063uk.co.dailymail
235176540423060.000077com.time
236176530781750.000137com.twimg
237176513642140.000112com.surveymonkey
238176484624930.000050net.researchgate
2391763963812870.000024com.kinja
240176360609130.000035gov.defense
241176346084230.000058edu.cornell
242176328728040.000038com.citrix
24317631522180.001984com.wixstatic
2441762797213490.000023com.instapaper
245176273864560.000053io.readthedocs
246176227389030.000035com.vogue
247176224843390.000071me.telegram
248176222747380.000040org.postgresql
2491761973212110.000026com.dezeen
250176195408420.000037com.citysearch
251176178104400.000056com.ft
252176162106880.000042org.kernel
253176159329690.000033com.yellowpages
254176158501440.000179uk.co.google
255176151322750.000085org.acm
256176119381600.000148com.zendesk
257176084144200.000058com.kickstarter
2581760708210600.000030com.strava
259176067624190.000058edu.berkeley
2601760625210450.000030gov.mo
261176041263330.000072com.cnbc
26217602550520.000636com.qq
263175987906700.000043com.adjust
2641759698210260.000031gov.oregon
265175966842990.000080com.meetup
2661759478810160.000031org.tensorflow
267175941783120.000077com.mapbox
268175924521590.000150com.salesforce
269175865243530.000068com.gmail
2701757759410660.000030com.googlesource
2711757471611760.000027edu.kit
272175746563270.000073com.springer
27317574172550.000629net.jsfiddle
274175713428480.000037com.wikia
2751757021011230.000028gov.ky
276175700306850.000042com.matterport
2771756918410550.000030com.hackernoon
278175690723820.000064com.fortune
279175681963970.000061com.photobucket
280175658683760.000065com.giphy
281175619183490.000069com.nypost
282175615286640.000043com.angieslist
2831755858811030.000029gov.wi
284175584509080.000035com.xrea
285175581781870.000125com.ebay
286175577868700.000036com.pixabay
2871755578410350.000031org.wnyc
288175540246270.000045com.economist
289175532462850.000082com.hubspot
290175529048580.000036edu.columbia
291175524823170.000076org.un
292175512503940.000062org.hbr
293175477688240.000037com.arstechnica
294175472525210.000048com.livechatinc
295175446489670.000033com.missingkids
296175428121350.000191com.feedburner
297175426465630.000046com.nationalgeographic
298175422108390.000037edu.yale
299175418909600.000033org.ohchr
300175397608260.000037org.aarp
301175389685500.000046com.scribd
3021753625410370.000031gov.maryland
303175355529870.000032gov.michigan
3041753487811700.000027gov.mt
305175327283540.000068com.oreilly
306175289141160.000238com.addthis
307175249624100.000060com.theatlantic
3081752289411640.000027org.amnesty
309175228387670.000039com.engadget
3101752274210480.000030us.pa.state
3111752258814460.000022com.jigsy
3121752073412750.000025com.healthgrades
313175202166790.000042com.intel
314175172944040.000061gov.whitehouse
3151751710612500.000025com.manta
316175151706890.000042com.vice
317175150684120.000059com.unsplash
318175078183110.000077com.wiley
319175064941280.000204com.wixsite
320175032206370.000045com.wikihow
3211749983613020.000024com.merchantcircle
322174964423410.000070com.livejournal
323174949523420.000070com.booking
3241749463213950.000022io.soup
325174932303700.000065com.skype
326174906185180.000048com.samsung
327174905166550.000044com.zdnet
328174877723980.000061com.entrepreneur
329174859983000.000080com.staticflickr
330174854683430.000070com.prnewswire
3311748425413060.000024ca.yelp
3321748425412160.000026com.contently
333174835542720.000085int.who
334174830448280.000037com.qz
335174771203590.000067com.office
336174765984720.000052com.cisco
3371747658014240.000022com.gimletmedia
3381747646015400.000020com.designobserver
339174750422940.000080com.hp
340174748062600.000090gov.cdc
341174714962360.000101com.disqus
3421747099413760.000023us.wi.state
343174677866400.000045com.cbsnews
344174674125170.000048com.statista
345174673261260.000208com.weibo
346174663707290.000040co.elastic
347174657805510.000046ca.pinterest
348174657388320.000037edu.psu
3491746225812120.000026org.tigris
3501746055212960.000024com.thoughtworks
351174541024070.000060com.inc
352174526944920.000050org.mediawiki
353174501423400.000071com.dailymotion
354174493223890.000063com.aol
355174484269760.000033com.gizmodo
3561744737612780.000025org.emojipedia
3571744575210810.000029net.leadpages
358174455405000.000049gov.nist
3591744288014590.000021com.zynga
360174427003610.000067org.ampproject
3611744235012180.000026us.nm.state
3621744229814530.000021com.activerain
3631744180210460.000030com.bandsintown
364174394724840.000051com.nature
365174393285200.000048com.venturebeat
366174389745720.000046com.box
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8751702688826170.000014com.getresponse
8761702484414350.000022com.cafepress
8771702472812080.000026com.forrester
878170220927030.000041com.usnews
879170216489990.000032com.walmart
8801702069414490.000022org.wiktionary
881170206724370.000056com.criteo
8821702027016310.000020au.com.whitepages
8831701631014440.000022ca.calgaryseocompany
884170162724210.000058com.adroll
8851701575610190.000031de.heise
8861701487814410.000022com.technorati
8871701463218080.000019de.welt
8881701459215650.000020com.bizcommunity
8891701408414010.000022mil.army
8901701294828250.000013com.fox
8911701222217290.000019com.contentmarketinginstitute
8921701171625610.000014com.yolasite
893170116185120.000048com.udacity
8941701106221700.000018com.podbean
8951701102214810.000021de.bundesverfassungsgericht
896170108362210.000109me.t
897170105981120.000255info.aboutads
8981701053830710.000011com.googlepages
8991700990217380.000019com.pushwoosh
900170093707010.000041com.gitlab
9011700910412330.000026org.sonatype
9021700873634930.000010org.notepad-plus-plus
9031700834033010.000010edu.uic
9041700824616680.000019com.waze
905170071548080.000038es.com.blogspot
9061700706414580.000021com.tiddlywiki
9071700690011000.000029com.digiday
9081700664816580.000020com.lulu
909170060868070.000038uk.co.eventbrite
9101700535229100.000012com.ndtv
9111700512616830.000019com.ssllabs
9121700466615830.000020com.sproutsocial
9131700422418300.000019me.pxlme
9141700414215280.000021com.neilpatel
9151700374214070.000022int.wipo
9161700361215020.000021org.filezilla-project
917170024724520.000053com.custhelp
9181700178622380.000017org.raspberrypi
9191700087816850.000019com.quandl
9201700060628830.000012edu.tufts
9211700011223660.000016com.salon
9221699915432790.000010org.metmuseum
9231699866034800.000010com.spreaker
9241699854625430.000014com.fineartamerica
9251699643216520.000020net.brownbook
9261699625812890.000024com.bmj
9271699481225420.000014uk.co.express
9281699454832680.000010in.lnkd
9291699349811890.000027com.techtarget
9301699183630270.000012edu.hawaii
9311699176012540.000025org.pewresearch
9321699169228760.000012com.fitbit
9331699165833920.000010org.edx
9341699112621540.000018uk.co.huffingtonpost
9351699065610300.000031com.fotolia
9361699025613110.000024com.optimizely
937169902127270.000040com.geocities
9381698944014100.000022com.mariadb
9391698938810680.000030com.infusionsoft
9401698849832100.000011com.popsci
941169879128270.000037gov.house
9421698779034670.000010cc.tiny
9431698662817660.000019com.spoke
9441698646626660.000014nl.uva
9451698592617270.000019org.unfe
9461698588010280.000031es.amazon
9471698571816470.000020uk.gov.westsussex
9481698555816810.000019com.chamberofcommerce
9491698538635840.000009gd.is
9501698528213080.000024net.java
951169852386540.000044com.houzz
9521698515610900.000029gov.archives
9531698416233130.000010com.avast
9541698394822160.000017com.examiner
9551698380216450.000020com.thefabricator
956169837905050.000049com.redbubble
9571698329618240.000019com.computerworld
9581698220434540.000010com.klout
959169810869340.000034com.delicious
9601697894233290.000010org.kiva
961169783764530.000053com.teamviewer
9621697828020480.000018com.cio
9631697783821710.000018com.thedailybeast
964169775984110.000059mp.mailchi
9651697737224350.000015br.com.blogspot
9661697661611660.000027com.netdna-cdn
967169764968890.000036com.arcgis
9681697605828440.000013com.createspace
9691697602841820.000008net.deviantart
9701697558017610.000019com.yelloyello
9711697551615760.000020gov.cabq
972169754904800.000051com.iconfinder
9731697507414310.000022au.com.yellowpages
9741697372412570.000025io.getmdl
9751697278012280.000026com.thedrum
9761697220416960.000019com.us
9771697175624220.000015org.linuxfoundation
9781696911253780.000006com.depositphotos
9791696900823280.000016com.ign
9801696790015630.000020org.gmplib
9811696788828320.000013edu.caltech
9821696725228950.000012com.infoq
9831696676422020.000018edu.uci
9841696618613320.000024com.xbox
9851696606614250.000022com.techrepublic
9861696602812620.000025com.glassdoor
9871696550615990.000020com.apachelounge
988169654548950.000035org.unicef
9891696511629900.000012com.discogs
9901696450029130.000012es.abc
991169631667430.000039com.biomedcentral
9921696267428630.000012nl.xs4all
9931696250214230.000022org.heart
9941696183226100.000014org.olympic
995169607362520.000093com.ssl-images-amazon
9961695997226800.000013de.bild
9971695979026720.000013com.nbc
9981695929816910.000019com.realtytimes
9991695922814560.000021com.mediafire
10001695908015690.000020com.galvanize

Credits

Thanks to the authors of the WebGraph framework, whose software made the computation of graph properties and ranks possible.

We hope the data will be useful for you to do any kind of research on ranking, graph analysis, link spam detection, etc. Let us know about your results via Common Crawl’s Google Group!

January 2019 crawl archive now available

The crawl archive for January 2019 is now available! It contains 2.85 billion web pages or 240 TiB of uncompressed content, crawled between January 15th and 24th.

The January crawl contains page captures of 850 million URLs not contained in any crawl archive before. New URLs are sampled based on the host and domain ranks (harmonic centrality) published as part of the Aug/Sep/Oct 2018 webgraph data set from the following sources:

  • sitemaps, RSS and Atom feeds
  • a breadth-first side crawl within a maximum of 6 links (“hops”) away from the homepages of the top 50 million hosts and domains
  • a random sample of outlinks taken from WAT files of the December crawl

The number of sampled URLs per domain depends on the domain’s harmonic centrality rank in the webgraph data set – higher ranking domain are allowed to “contribute” more URLs.

Archive Location and Download

The January crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2019-04/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2019-04/segment.paths.gz100
WARC filesCC-MAIN-2019-04/warc.paths.gz6400058.86
WAT filesCC-MAIN-2019-04/wat.paths.gz6400018.88
WET filesCC-MAIN-2019-04/wet.paths.gz640007.98
Robots.txt filesCC-MAIN-2019-04/robotstxt.paths.gz640000.18
Non-200 responses filesCC-MAIN-2019-04/non200responses.paths.gz640001.65
URL index filesCC-MAIN-2019-04/cc-index.paths.gz3020.21

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2019-04/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

December 2018 crawl archive now available

The crawl archive for December 2018 is now available! It contains 3.1 billion web pages or 250 TiB of uncompressed content, crawled between December 9th and 19th.

The December crawl contains page captures of 735 million URLs not contained in any crawl archive before. New URLs stem from:

  • extracting and sampling URLs from sitemaps, RSS and Atom feeds if provided by hosts visited in prior crawls. Hosts are selected from the highest-ranking 60 million domains of the Aug/Sep/Oct 2018 webgraph data set
  • a breadth-first side crawl within a maximum of 6 links (“hops”) away from the home pages of the top 50 million domains of the webgraph dataset
  • a random sample of outlinks taken from WAT files of the November crawl
  • 30 million external links sampled from Wikipedia data dumps

Archive Location and Download

The December crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2018-51/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2018-51/segment.paths.gz100
WARC filesCC-MAIN-2018-51/warc.paths.gz6384065.31
WAT filesCC-MAIN-2018-51/wat.paths.gz6384020.01
WET filesCC-MAIN-2018-51/wet.paths.gz638408.43
Robots.txt filesCC-MAIN-2018-51/robotstxt.paths.gz638400.22
Non-200 responses filesCC-MAIN-2018-51/non200responses.paths.gz638401.71
URL index filesCC-MAIN-2018-51/cc-index.paths.gz3020.24

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2018-51/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

November 2018 crawl archive now available

The crawl archive for November 2018 is now available! It contains 2.6 billion web pages or 220 TiB of uncompressed content, crawled between November 12th and 22nd.

The November crawl contains 640 million new URLs, not contained in any crawl archive before. New URLs stem from:

  • extracting and sampling URLs from sitemaps, RSS and Atom feeds if provided by hosts visited in prior crawls. Hosts are selected from the highest-ranking 60 million domains of the Aug/Sep/Oct 2018 webgraph data set
  • a breadth-first side crawl within a maximum of 10 links (“hops”) away from the home pages of the top 40 million domains of the webgraph dataset
  • a random sample of outlinks taken from WAT files of the October crawl
  • 50 million external links sampled from Wikipedia data dumps

Archive Location and Download

The November crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2018-47/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2018-47/segment.paths.gz100
WARC filesCC-MAIN-2018-47/warc.paths.gz5600054.16
WAT filesCC-MAIN-2018-47/wat.paths.gz5600017.36
WET filesCC-MAIN-2018-47/wet.paths.gz560007.42
Robots.txt filesCC-MAIN-2018-47/robotstxt.paths.gz560000.2
Non-200 responses filesCC-MAIN-2018-47/non200responses.paths.gz560001.92
URL index filesCC-MAIN-2018-47/cc-index.paths.gz3020.2

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2018-47/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

Host- and Domain-Level Web Graphs Aug/Sep/Oct 2018

We are pleased to announce a new release of host-level and domain-level web graphs based on the published crawls of August, September and October 2018. Additional information about data formats, the processing pipeline, our objectives, and credits can be found in the announcements of prior webgraph releases (e.g., the Feb/Mar/Apr 2017 Webgraphs). You may also visit the projects cc-webgraph and cc-pyspark which host all scripts and tools required to construct the graphs.

Host-level graph

The graph consists of 903 million nodes and 5.25 billion edges and includes dangling nodes i.e. hosts that have not been crawled yet are pointed to from a link on a crawled page. There are 819 million dangling nodes (91%) and the largest strongly connected component contains only 60 million (6.5%) nodes. The host names are reversed and a leading www. is stripped: www.subdomain.example.com becomes com.example.subdomain.

You can download the graph and the ranks of all 903 million hosts from AWS S3 on the path s3://commoncrawl/projects/hyperlinkgraph/cc-main-2018-aug-sep-oct/host/. Alternatively, you can use https://commoncrawl.s3.amazonaws.com/projects/hyperlinkgraph/cc-main-2018-aug-sep-oct/host/ as prefix to access the files from everywhere.

The following files and formats are provided:

SizeFileDescription
5.66 GBcc-main-2018-aug-sep-oct-host-vertices.paths.gznodes ⟨id, rev host⟩, paths of 42 vertices files
23.60 GBcc-main-2018-aug-sep-oct-host-edges.paths.gzedges ⟨from_id, to_id⟩, paths of 98 edges files
9.63 GBcc-main-2018-aug-sep-oct-host.graphgraph in BVGraph format
2 kBcc-main-2018-aug-sep-oct-host.properties
10.83 GBcc-main-2018-aug-sep-oct-host-t.graphtranspose of the graph (outlinks inverted to inlinks)
2 kBcc-main-2018-aug-sep-oct-host-t.properties
1 kBcc-main-2018-aug-sep-oct-host.statsWebGraph statistics
13.47 GBcc-main-2018-aug-sep-oct-host-ranks.txt.gzharmonic centrality and pagerank

Domain-level graph

The domain graph was built by aggregating the host graph on the level of pay-level domains (PLDs) based on the public suffix list maintained on publicsuffix.org.

The domain-level graph has 87 million nodes and 1.48 billion edges. 56% or 49 million nodes are dangling nodes, the largest strongly connected component covers 33.5 million or 38% of the nodes.

All files related to the domain graph are available on AWS S3 under s3://commoncrawl/projects/hyperlinkgraph/cc-main-2018-aug-sep-oct/domain/ resp. https://commoncrawl.s3.amazonaws.com/projects/hyperlinkgraph/cc-main-2018-aug-sep-oct/domain/.

Download files of the Common Crawl Aug/Sep/Oct 2018 domain-level webgraph

SizeFileDescription
0.60 GBcc-main-2018-aug-sep-oct-domain-vertices.txt.gznodes ⟨id, rev domain, num hosts⟩
5.95 GBcc-main-2018-aug-sep-oct-domain-edges.txt.gzedges ⟨from_id, to_id⟩
3.24 GBcc-main-2018-aug-sep-oct-domain.graphgraph in BVGraph format
2 kBcc-main-2018-aug-sep-oct-domain.properties
3.39 GBcc-main-2018-aug-sep-oct-domain-t.graphtranspose of the graph
2 kBcc-main-2018-aug-sep-oct-domain-t.properties
1 kBcc-main-2018-aug-sep-oct-domain.statsWebGraph statistics
1.89 GBcc-main-2018-aug-sep-oct-domain-ranks.txt.gzharmonic centrality and pagerank

Below you’ll find the top 1000 domains ranked by Harmonic Centrality or PageRank. The full list of all 87 million domain ranks is available for download.

Top 1000 domains ranked by harmonic centrality (Aug/Sept/Oct 2018)

harmonic
centrality
rank
hc valuepage rankpage rank
value
reversed hostname
12499327620.012750com.facebook
22467105610.017210com.googleapis
32345336630.010761com.google
42237157240.008252com.twitter
52213683650.006786com.youtube
62111524660.006404org.w
71959833890.003741com.instagram
81949947280.004616org.gmpg
919210640100.003396com.linkedin
1018557384140.002133com.wordpress
1118475084130.002729org.wordpress
1218409784250.001383org.wikipedia
1318366100240.001489com.gravatar
1418361154210.001623com.pinterest
1517992020120.002819com.bootstrapcdn
1617977192190.001774com.apple
1717931956320.001000com.blogspot
1817718492410.000758be.youtu
1917629132340.000918gl.goo
2017616074260.001308com.microsoft
2117591076160.001984com.googletagmanager
2217583026370.000840com.amazon
2317567490150.002013com.cloudflare
2417539566460.000658com.tumblr
2517512444230.001557com.adobe
2617478800280.001256com.vimeo
2717351964610.000482com.yahoo
2817328248220.001618com.macromedia
2917262608450.000669com.wp
3017247612360.000867com.paypal
3117245380200.001675com.github
3217243016270.001272com.gstatic
3317237096330.000928com.amazonaws
3417218638470.000617me.wp
3517175034520.000568org.mozilla
3617148704980.000318com.googleusercontent
3717124438400.000793co.t
3817114262750.000425com.weebly
39170882261150.000256com.nytimes
4017080324390.000796net.cloudfront
4117058308780.000424org.creativecommons
4217046746510.000584org.w3
43170344461500.000171org.wikimedia
4416978138650.000465com.medium
4516977018590.000490com.flickr
4616969818600.000482ly.bit
4716934330380.000830io.github
48169255641390.000188net.slideshare
49169079181490.000171com.theguardian
5016886648710.000433com.jquery
51168480681330.000196com.imgur
52168380701650.000145com.myspace
5316825278530.000551eu.europa
54168139681590.000152com.imdb
5516800572350.000899net.fbcdn
56167515371270.000208com.issuu
57167312961130.000267org.apache
5816730104300.001101net.doubleclick
59167130841880.000124com.tinyurl
60166901642780.000085com.theverge
61166862241050.000288com.reddit
62166815261200.000229com.yelp
6316673945170.001886com.wixstatic
64166664272600.000091com.appspot
65166612482740.000086com.buzzfeed
66166602871430.000182com.oracle
67166536601340.000191com.spotify
68166428502410.000097me.about
69166412621230.000216com.android
70166351423350.000071org.chromium
711661984570.004633com.godaddy
72166191181550.000164com.tripadvisor
7316611356310.001041com.squarespace
74166098652850.000083com.mysql
75165999433080.000076com.about
76165931643460.000067org.arxiv
77165922991310.000204org.ietf
7816588645950.000343com.soundcloud
79165838513370.000071edu.upenn
80165815914350.000057edu.princeton
81165748033580.000066org.ieee
82165737291560.000164org.gnu
83165673421240.000215com.dropbox
84165671263240.000073com.deviantart
85165438361480.000174com.forbes
86165283341300.000206com.whatsapp
8716521358870.000400com.statcounter
88165212544270.000058google.blog
89165204604300.000057com.ssrn
9016519609620.000481org.schema
91165167901320.000199org.archive
92165111141440.000182net.sourceforge
93165024311800.000130com.cnn
94164991283200.000074gov.loc
95164893331910.000121com.foursquare
96164883801890.000122edu.stanford
9716487861880.000386com.bing
98164837083710.000065edu.ucla
99164798523890.000062com.stackexchange
100164789364940.000050edu.gatech
101164784084140.000059org.sciencemag
102164761801830.000129com.dribbble
103164754712030.000109com.nbcnews
104164709334130.000059com.withgoogle
105164500542550.000092com.example
106164479773590.000066com.googlecode
107164439871080.000278com.ytimg
108164386571690.000142uk.co.bbc
109164367612360.000098edu.mit
110164282942300.000099com.mozilla
111164243522240.000102com.githubusercontent
112164146274580.000054com.sap
113164122535650.000046com.flipboard
114164119582050.000109com.washingtonpost
115164084021460.000176com.blogger
116164068975460.000047com.chrome
11716404143490.000590com.fb
118164027075710.000045edu.utah
119163981224020.000060com.jetbrains
120163961634920.000050com.chron
121163954493220.000073com.git-scm
122163946551860.000125com.huffingtonpost
123163939012230.000102com.businessinsider
12416393651970.000330com.wix
12516391015890.000380com.paypalobjects
126163798471220.000225org.bbb
127163795472430.000097com.live
128163726702870.000082gov.fda
129163726412800.000084au.com.google
13016372405540.000524com.list-manage
131163710022860.000082edu.harvard
132163670165320.000047com.fastcodesign
133163661463650.000066com.tinypic
134163649371940.000117com.wsj
135163475624100.000059tv.ustream
136163441052980.000080com.cnet
137163427653340.000071com.bbc
138163399483870.000062com.variety
139163392484070.000060org.eclipse
140163386364410.000056co.g
141163368193040.000078com.reuters
142163331162580.000091org.doi
143163262282620.000090com.ibm
144163211632660.000088com.wired
145163189573120.000076uk.co.telegraph
146163172741970.000112com.typepad
147163172623490.000067com.gmail
148163163424180.000058org.iana
149163097962690.000087com.bloomberg
150163093632480.000095net.windows
151163083941040.000290com.shopify
152163049614560.000054co.ibb
153163048911810.000129com.stackoverflow
154163032802400.000097com.techcrunch
15516297167550.000519net.akamaihd
156162966752720.000087com.go
157162962171540.000166gov.nih
158162895193940.000061gov.nasa
159162886953390.000071com.msn
160162875253520.000067com.latimes
161162854231620.000147com.etsy
162162823101090.000274com.google-analytics
163162822865080.000049edu.rutgers
164162822325450.000047ca.utoronto
165162756721700.000142com.twimg
166162755821030.000293com.mailchimp
16716274598900.000378de.google
168162712402650.000088org.acm
169162687073660.000066com.mashable
170162674304980.000050com.quora
171162647464160.000058au.gov.nsw
172162641481160.000242com.jimdo
17316261109500.000589com.fontawesome
174162526685500.000047com.vogue
175162516424670.000053com.zdnet
176162508183570.000067uk.co.dailymail
177162477306630.000044com.hbo
178162476214470.000055com.googleblog
179162456807610.000039com.dezeen
180162446872770.000085com.usatoday
181162443201580.000162com.eventbrite
182162431635820.000045edu.osu
183162394592630.000090com.meetup
184162294624290.000058gov.archives
185162241804500.000055edu.cornell
186162231754610.000053edu.berkeley
187162187633960.000061com.ted
188162179361510.000170com.opera
189162149805810.000045edu.washington
190162113632990.000080com.udacity
191162083635800.000045org.hrw
192161978692080.000107com.surveymonkey
193161954993160.000075com.time
194161924494860.000051com.ecwid
195161874384090.000060com.kickstarter
196161874073210.000074org.npr
197161873446960.000042com.discogs
198161811087000.000042io.itch
199161778074960.000050org.unicode
200161777483130.000076com.springer
20116176015290.001149ru.yandex
202161742314460.000055org.kernel
203161731993700.000065com.aol
204161730597010.000042com.economist
205161714042900.000081com.hp
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Credits

Thanks to the authors of the WebGraph framework, whose software made the computation of graph properties and ranks possible.

We hope the data will be useful for you to do any kind of research on ranking, graph analysis, link spam detection, etc. Let us know about your results via Common Crawl’s Google Group!

October 2018 crawl archive now available

The crawl archive for October 2018 is now available! It contains 3.0 billion web pages and 240 TiB of uncompressed content, crawled between October 15th and 24th.

The October crawl contains 600 million new URLs, not contained in any crawl archive before. New URLs stem from:

  • extracting and sampling URLs from sitemaps, RSS and Atom feeds if provided by hosts visited in prior crawls. Hosts are selected from the highest-ranking 60 million domains of the May/June/July 2018 webgraph data set
  • a breadth-first side crawl within a maximum of 10 links (“hops”) away from the home pages of the top 40 million domains of the webgraph dataset
  • a random sample of outlinks taken from WAT files of the September crawl
  • 15 million external links sampled from Wikipedia data dumps

Please note that the character set detection was not fully working for the first 13 segments of the October crawl – about 15% of the page captures in these segments have no charset and language assigned. More information is found in the bug report.

Archive Location and Download

The October crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2018-43/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2018-43/segment.paths.gz100
WARC filesCC-MAIN-2018-43/warc.paths.gz5600058.84
WAT filesCC-MAIN-2018-43/wat.paths.gz5600019.34
WET filesCC-MAIN-2018-43/wet.paths.gz560008.22
Robots.txt filesCC-MAIN-2018-43/robotstxt.paths.gz560000.21
Non-200 responses filesCC-MAIN-2018-43/non200responses.paths.gz560001.78
URL index filesCC-MAIN-2018-43/cc-index.paths.gz3020.23

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2018-43/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

September 2018 crawl archive now available

The crawl archive for September 2018 is now available! It contains 2.8 billion web pages and 220 TiB of uncompressed content, crawled between September 17th and 26th.

The following improvements and fixes to the data formats have been made:

  • the columnar index contains the content language of a web page as a new field. Please read the instructions below how to upgrade your tools to read newly added fields.
  • WARC revisit records (HTTP status 304) in the URL indexes do not include a field for the payload "digest" anymore. The corresponding column "content_digest" in the columnar index now contains null values.
  • we’ve fixed a bug in the WARC writer which added an extra line break (\r\n) between HTTP header and payload in WARC response record. See the announcement on our Google group for details. Thanks again to Greg Lindahl for discovering this bug!

The September crawl contains 500 million new URLs, not contained in any crawl archive before. New URLs stem from

  • the continued seed donation of URLs from mixnode.com
  • extracting and sampling URLs from sitemaps, RSS and Atom feeds if provided by hosts visited in prior crawls. Hosts are selected from the highest-ranking 60 million domains of the May/June/July 2018 webgraph data set
  • a breadth-first side crawl within a maximum of 6 links (“hops”) away from the home pages of the top 25 million domains of the webgraph dataset
  • a random sample taken from WAT files of the August crawl

New Fields in the Columnar URL Index

The columnar index has been updated to contain two new fields added to WARC and CDX files starting with the August crawl:

In addition, the column content_digest now contains null values.

The table schema in the cc-index-table project on github has been updated to reflect these changes.

Please follow the instructions below to upgrade to the new schema for Spark, Athena/Presto or Hive. If you do not want to use the new fields, no action is required, the tools should continue to work with the old schema.

Spark

The property spark.sql.parquet.mergeSchema must be set to true, e.g. by running the Spark job with the command

spark-submit --conf spark.sql.parquet.mergeSchema=true ...

Note that enabling schema merging has a negative impact on the performance of Spark jobs,
you may want to enable it only in case the new fields are required for your task.

Athena / Presto

Please create a new table using the updated schema. The old schema will continue to work but the new fields cannot be used. Further information can be found in the chapter about schema updates in the Athena documentation.

Hive

Schema evolution is supported since version 0.13. The procedure is essentially the same as for Athena – you need to drop and re-create the table with the updated schema only in case the new fields are used.

Archive Location and Download

The September crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2018-39/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2018-39/segment.paths.gz100
WARC filesCC-MAIN-2018-39/warc.paths.gz5632047.9
WAT filesCC-MAIN-2018-39/wat.paths.gz5632018.5
WET filesCC-MAIN-2018-39/wet.paths.gz563207.87
Robots.txt filesCC-MAIN-2018-39/robotstxt.paths.gz563200.19
Non-200 responses filesCC-MAIN-2018-39/non200responses.paths.gz563201.83
URL index filesCC-MAIN-2018-39/cc-index.paths.gz3020.22

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2018-39/. Also the columnar index has been updated to contain this crawl.

We are grateful to our friends at mixnode for donating a seed list of 200 Million URLs to enhance the Common Crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.

August Crawl Archive Introduces Language Annotations

The crawl archive for August 2018 is now available! It contains 2.65 billion web pages and 220 TiB of uncompressed content, crawled between August 14th and 22th. Together with an upgrade of the crawler software we’ve plugged in a language detector and now provide as annotation the language a web page is written in.

Please note that the WARC files of August 2018 (CC-MAIN-2018-34) are affected by a WARC format error and contain an extra \r\n between HTTP header and payload content. Also the given "Content-Length" is off by 2 bytes. For more information about this bug see this post on our user forum.

Language Annotations

We now run the Compact Language Detector 2 (CLD2) on HTML pages to identify the language of a document. CLD2 is able to identify 160 different languages and up to 3 languages per document. The detected languages resp. the ISO-639-3 code are shown in the URL index as a new field, e.g., "languages": "zho,eng". The WARC metadata records contain the full CLD2 response including scores and text coverage:

languages-cld2: {"reliable":true,"text-bytes":3783,"languages":[{"code":"zh","code-iso-639-3":"zho","text-covered":0.93,"score":1943.0,"name":"Chinese"},{"code":"en","code-iso-639-3":"eng","text-covered":0.05,"score":523.0,"name":"ENGLISH"}]}

On github you’ll find the Java bindings to the CLD2 native library and the distribution of the primary document languages as part of our crawl statistics.

Please note that the columnar index does not contain the detected languages for now. This requires a change of the table schema. We plan to add the new fields later after we’ve verified that an update of the schema does not break common tools (e.g., Spark or Presto/Athena) used to process the table.

Crawler Software Upgrade and Minor Changes to WARC Files

Our crawler has been upgraded and is now based on the most recent version of Apache Nutch (1.15). The source code can be found on github in our Nutch fork.

In conjunction with the crawler upgrade we made the following minor changes affecting the WARC record format of the crawl archives:

  • "HTTP 304 notmodified" responses are now stored as WARC revisit records in the "crawldiagnostics" subset along with 404s, redirects and other non-200 responses. For now the revisit records contain a payload digest although there is no payload sent together with HTTP 304 responses. The stupid reason is that the columnar index requires the digest field and we want to make sure that all tools continue to work as expected. The SHA-1 digest of an empty payload (zero bytes) is used for the revisit records.
  • All HTTP response headers are now preserved. As before, if the page content is truncated or was compressed or chunked during transfer, the headers "Content-Encoding", "Transfer-Encoding" and "Content-Length" need to be rewritten, otherwise WARC readers may fail reading the record payload. E.g., a page compressed on the HTTP protocol layer may have the following headers – the original headers are prefixed with X-Crawler-:
    X-Crawler-Content-Encoding: gzip
    X-Crawler-Content-Length: 2010
    Content-Length: 16125
    
  • The crawler may now also store pages fetched partially because of a network disconnect. These captures are marked as WARC-Truncated: disconnect in the WARC record header. Note that the crawler may also truncate the page payload because of a content limit (we store only 1 MB per page) or a time limit (after 10 minutes a page download is canceled).
  • the WARC record headers indicate still "WARC/1.0" although we follow the WARC specification, v1.1. While testing various WARC reader libraries we’ve found that at least two of them fail on records with a "WARC/1.1" header.

Please note that due to a bug the first two crawled segments are without robots.txt captures.

Archive Location and Download

The August crawl archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2018-34/.

To assist with exploring and using the dataset, we provide gzipped files which list all segments, WARC, WAT and WET files.
By simply adding either s3://commoncrawl/ or https://commoncrawl.s3.amazonaws.com/ to each line, you end up with the S3 and HTTP paths respectively.

 File List#FilesTotal Size
Compressed (TiB)
SegmentsCC-MAIN-2018-34/segment.paths.gz100
WARC filesCC-MAIN-2018-34/warc.paths.gz7152067.79
WAT filesCC-MAIN-2018-34/wat.paths.gz7152016.76
WET filesCC-MAIN-2018-34/wet.paths.gz715206.92
Robots.txt filesCC-MAIN-2018-34/robotstxt.paths.gz715200.19
Non-200 responses filesCC-MAIN-2018-34/non200responses.paths.gz715201.79
URL index filesCC-MAIN-2018-34/cc-index.paths.gz3020.21

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2018-34/. Also the columnar index has been updated to contain this crawl.

Please donate to Common Crawl if you appreciate our free datasets! We’re also seeking corporate sponsors to partner with Common Crawl for our non-profit work in open data. Please contact [email protected] for sponsorship information.