Just came across this piece of information about the world's 100 oldest dot com domains.

The first dot com domain symbolics.com was created on 15 March 1985, this domain is still active. After symbolics.com in the list comes bbn.com created on 24th April 1985 and think.com created on 25th May 1985

Here are the top 15 domains in order of creation

Rank      Create date          Domain name
1.          15-Mar-1985            SYMBOLICS.COM
2.          24-Apr-1985            BBN.COM
3.          24-May-1985            THINK.COM
4.          11-Jul-1985            MCC.COM
5.          30-Sep-1985            DEC.COM
6.          07-Nov-1985            NORTHROP.COM
7.          09-Jan-1986            XEROX.COM
8.          17-Jan-1986            SRI.COM
9.          03-Mar-1986            HP.COM
10.          05-Mar-1986            BELLCORE.COM
11.          19-Mar-1986            IBM.COM
11.          19-Mar-1986            SUN.COM
13.          25-Mar-1986            INTEL.COM
13.          25-Mar-1986            TI.COM
15.          25-Apr-1986            ATT.COM

Check out 100 oldest dot com domains at Jottings.

via [tsunamiduit]