27 years ago the first Domain Name was registered. Here are the first 10 ever registered (The Top 100 list can be found here).
As of today (1/6/2012) there are 135,639,614 domains across the .COM, .NET, .ORG, .INFO, .BIZ, and .US top level domains. There are more and more added every day & this does not even cover all the .GOV, .US, etc. Domain names in use.
|Rank||Date Registered||Domain Name|