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March 10, 2017

February 2017 Crawl Archive Now Available

Note: this post has been marked as obsolete.
The crawl archive for February 2017 is now available! The archive contains 3.08 billion+ web pages and over 250 TiB of uncompressed content.
Sebastian Nagel
Sebastian Nagel
Sebastian is a Distinguished Engineer with Common Crawl.

The crawl archive for February 2017 is now available! The archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2017-09/. It contains 3.08 billion+ web pages and over 250 TiB of uncompressed content.

Data Type File List #Files Total Size
Compressed (TiB)
Segments segment.paths.gz 100
WARC warc.paths.gz 65200 55.88
WAT wat.paths.gz 65200 20.67
WET wet.paths.gz 65200 9.14
Robots.txt files robotstxt.paths.gz 65200 0.13
Non-200 responses non200responses.paths.gz 65200 1.98
URL index files cc-index.paths.gz 302 0.24
Columnar URL index files cc-index-table.paths.gz 900 0.28

To extend the coverage of the crawl we

  • continued to use sitemaps to find fresh URLs for known hosts;
  • added 250 million URLs within a maximum of 2 links (“hops”) away from the home pages of the top 5 million hosts. We also ranked these hosts by Harmonic Centrality calculated on Common Search's host-level webgraph using HyperBall;
  • again, used verified, DNS-resolvable domain names of European country-code TLDs (.eu, .fr, .be, .de, .ch, .nl, .pl, .ru, .dk), thanks to the continued donation of seed data from webxtrakt;
  • included 3 million URLs from dmoz.org (formerly, the Open Directory Project).

The link extraction for WAT generation has been improved to include links to embedded content. See issues 7 and 9 on GitHub for further information.

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://data.commoncrawl.org/ to each line, you end up with the S3 and HTTP paths respectively.

The Common Crawl URL Index for this crawl is available at: https://index.commoncrawl.org/CC-MAIN-2017-09/. 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.

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 info@commoncrawl.org for sponsorship information.

This release was authored by:
No items found.


Missing Language Classification

Originally reported by: 

Starting with crawl CC-MAIN-2018-39 we added a language classification field (‘content-languages’) to the columnar indexes, WAT files, and WARC metadata for all subsequent crawls. The CLD2 classifier was used, and includes up to three languages per document. We use the ISO-639-3 (three-character) language codes.