I was curious how many domains were registered – especially 4 character domains like trif.com. Well there are a bit more than 1.5 million possible 4 character/digit possibilities and most are taken. In actuality, only about 450 names remain.
There are 83 million .com’s registered and another 300 million deleted domains. There are 12 million registered .net’s and 8 million registered .orgs.
You’ll find it interesting to note that more than 400,000 domains are added every day and more than 450,000 domains are expired every day. So it would seem the .com is stabilizing.
One of the oldest domain names registered? think.com was registered May of 1985. 1985 and 1986 saw registrations of dec.com, hp.com, and xerox.com.