you must be guess that yahoo.com or google.com will be number 1 and 2 ? you wrong because SYMBOLICS.COM is the oldest .com domain. This domain registered at 15-Mar-1985. And in position 2 the oldest domain is, BBN.COM.. registered at 24-Apr-1985. a few minutes ago I checked this domain and all still up !

100 oldest .com domain list click here