Also there is the ARIN whowas service. Requires jumping through some additional hoops, but at least it is available.
Owen > On Apr 18, 2015, at 17:09 , Sean Donelan <s...@donelan.com> wrote: > > > ARIN has the early archives from its predecessors, i.e SRI-NIC. I think some > documents may still be paper, so there may be some gaps. > > Contact hostmas...@arin.net registration services, and provide as > much detail as possible so they can check their archives. > > You can also check the RFCs "Assigned Numbers" (various numbers) for early > network assignments made directly by IANA. > > > On Sat, 18 Apr 2015, Roy wrote: >> Is there an archive of POCs for some of the early netblocks (1985 or so)? >> We are trying to figure out some corporate history. >>