Here’s an interesting piece of information about the history of the internet: the first 25.com domain names every registered. The table lists the date for each registration, the website address and some information about the domain and/or registrant.

1.
15-Mar-1985
SYMBOLICS.COM (Domain registration company!)

2.
24-Apr-1985
BBN.COM (Development Services)

3.
24-May-1985
THINK.COM (Now owned by Oracle)

4.
11-Jul-1985
MCC.COM (Parked domain, it seems)

5.
30-Sep-1985
DEC.COM (now redirects to [...]