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.
Web wide crawl with initial seedlist and crawler configuration from October 2010
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20110106223304/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/dnsrecord
DNS Records are text that is stored in zone files and used for the translation of domain names to IP addresses. As the information is purely text is of key importance that the correct text is written otherwise mistakes can occur.