An anonymous reader writes "The domain COM was installed as one of the first set of top-level domains when the Domain Name System was first implemented for use on the Internet in January 1985. The internet celebrates a landmark event on the 15th of March — the 25th anniversary of the day the first .com name was registered. Of the 250 million websites, there are over 80 million active .com sites. In March 1985, Symbolics computers of Cambridge, Massachusetts entered the history books with an internet address ending in .com (however, on 27 August 2009, it was sold to XF.com Investments). That same year another five companies jumped on a very slow bandwagon. Here is a list of the 100 oldest still-existing registered .com domains."