At least this says 1993:
$ whois pizzahut.com | grep Creation
Creation Date: 07-dec-1993
Creation Date: 1993-12-07T05:00:00Z
Re:PizzaHut still serves its first homepage
by mrbill on Saturday April 18, 2015 @12:29PM
(#9399989)
Domain registration doesn't imply website creation.
That's a cool trick. Didn't know you could do that.
Re:PizzaHut still serves its first homepage
by simlevesque on Saturday April 18, 2015 @01:14PM
(#9400155)
Whois or Grep ?
[1] http://www.internetlivestats.com/
[2] http://www.internetlivestats.com/total-number-of-websites/