[danbruc]

Not sure how accurate the numbers [1] are but some interesting numbers there, relevant here [2].

[1] http://www.internetlivestats.com/

[2] http://www.internetlivestats.com/total-number-of-websites/

[rb2k_]

At least this says 1993:

    $ whois pizzahut.com | grep Creation
      Creation Date: 07-dec-1993  
      Creation Date: 1993-12-07T05:00:00Z

[mrbill]

Domain registration doesn't imply website creation.

[nrs26]

That's a cool trick. Didn't know you could do that.

[simlevesque]

Whois or Grep ?