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/20110106225615/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/intranet
Intranet is an internal form of the Internet, many businesses have their own Intranet that contains information relating to the business and only those within the organisation have access to it.