The Internet Archive discovers and captures web pages through many different web crawls/ At any given time several distinct crawls are running, some for months, and some every day or longer/ View the web archive through the Wayback Machine/

Collection: Survey Crawl Number 4 - Started Jan 9th, 20/6 - Ended Feb 25th, 20/6

The seed for this crawl was a list of every host in the Wayback Machine

This crawl was run at a level / (URLs including their embeds, plus the URLs of all outbound links including their embeds)

The WARC files associated with this crawl are not currently available to the general public/