The crawl archive for April 2017 is now available! The archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2017-17/. It contains 2.94 billion+ web pages and over 250 TiB of uncompressed content.

To improve coverage and freshness we ranked all hosts found in the February and March 2017 crawls by Harmonic Centrality, and

  • added 390 million URLs within a maximum of 2 links (“hops”) away from the home pages of the top 16 million hosts;
  • used sitemaps (if provided by any of these 16 million hosts) to take a random sample and add further 160 million URLs.

About 56% of the 2.94 billion URLs overlap with the preceding March 2017 crawl, with 550 million URLs not contained in any crawl archive before.

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 to each line, you end up with the S3 and HTTP paths respectively.

File List#FilesTotal Size
Compressed (TiB)
WARC filesCC-MAIN-2017-17/warc.paths.gz6470055.03
WAT filesCC-MAIN-2017-17/wat.paths.gz
WET filesCC-MAIN-2017-17/wet.paths.gz
Robots.txt filesCC-MAIN-2017-17/robotstxt.paths.gz
Non-200 responsesCC-MAIN-2017-17/non200responses.paths.gz647000.84

The Common Crawl URL Index for this crawl is available at: For more information on working with the URL index, please refer to the previous blog post or the Index Server API. There is also a command-line tool client for common use cases of the URL index.

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