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October 29, 2017

October 2017 Crawl Archive Now Available

Note: this post has been marked as obsolete.
The crawl archive for October 2017 is now available! The archive contains 3.65 billion web pages and over 300 TiB of uncompressed content.
Sebastian Nagel
Sebastian Nagel
Sebastian is a Distinguished Engineer with Common Crawl.

The crawl archive for October 2017 is now available! The archive is located in the commoncrawl bucket at crawl-data/CC-MAIN-2017-43/. It contains 3.65 billion web pages and over 300 TiB of uncompressed content.

Data Type File List #Files Total Size
Compressed (TiB)
Segments segment.paths.gz 100
WARC warc.paths.gz 89100 84.90
WAT wat.paths.gz 89100 24.33
WET wet.paths.gz 89100 10.58
Robots.txt files robotstxt.paths.gz 89100 0.17
Non-200 responses non200responses.paths.gz 89100 2.62
URL index files cc-index.paths.gz 302 0.28
Columnar URL index files cc-index-table.paths.gz 900 0.32

To improve coverage and freshness we added over 900 million new URLs (not contained in any crawl archive before):

  • 350 million URLs are a random sample extracted from sitemaps if provided by any of the top 80 million hosts taken from the May/June/July 2017 webgraph data set
  • 250 million URLs were found by a side crawl within a maximum of 3 links (“hops”) away from the home pages of the top 80 million hosts
  • 150 million URLs are randomly chosen from WAT files of the September crawl
  • 180 million URLs are links donated by mixnode.com

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-2017-43/. 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.

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 info@commoncrawl.org for sponsorship information.

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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.