Another post there links to all domains registered up to December 15, 1987, which is fascinating too. So much of it was dot edu domains, in keeping with the heavy academic associations of the early internet. And finally, a much longer list of all domains registered through February 22, 1994. Seems to me that was around when the rush to grab up names began.
How fun a wayback machine could be, long as we didn’t crush any adversely pivotal butterflies.