[ih] when did APRANET -TIPs become known as -TACs

[Nigel Roberts]

And I still remember some of the the host numbers

MIT-AI 134
MIT-DM 70  (Home of Dungeon/Zork, our inspiration for MUD)

SU-AI was something in the twenties (23? anyone remember??)


Nigel


On 20/04/2025 00:41, John Day via Internet-history wrote:
> A site with more than one host connected to the IMP would regularly have a hyphen between the organization name and the name of the specific lab or whatever it was, e.g. MIT-Multics, MIT-AI.
>
> Sounds like you don’t have enough to do.
>
>> On Apr 19, 2025, at 18:33, Alexander McKenzie via Internet-history<internet-history at elists.isoc.org> wrote:
>>
>> Ah, you are referring to Host names.  There wasm for example, a TIP at BBN
>> known officially as BBN-TIP. The dash was part of the Host name, not part
>> of the word "TIP".
>>
>> Cheers,
>> Alex McKenzie
>>
>> On Saturday, April 19, 2025 at 06:10:31 PM EDT, the keyboard of geoff
>> goodfellow via Internet-history<internet-history at elists.isoc.org> wrote:
>>
>>
>> so BOTH the TIPs and TAC's had the -TIP and -TAC name notation, e.g. viz.:
>>
>> 243,ACCAT-TIP,TIP,USER,NEW
>> in
>> ;[SRI-CSL]<GEOFF2>HSTNAM.TXT  (Kept by Geoff at SRI-CSL)
>> ;Last update: 4-Aug-82
>> as EXCERPTED from:
>> https://pdp-10.trailing-edge.com/bb-d868e-bm_tops20_v41_2020_dist_1of2/01/new-system/hstnam.txt.html
>> &
>> https://pdp-10.trailing-edge.com/BB-H137C-BM/06/new-system/hstnam.txt.html
>>
>> HOST ACCAT-TAC, 2/35,USER,TAC,C30,[NELC-TIP]
>> ; Last updated: MRC 2/1/83
>> as EXCERPTED from:
>> https://github.com/ttkzw/hosts.txt/blob/master/pub/hosts/19830201/HOSTS.TXT
>>
>> and some even had both (which must have been during the -TIP to -TAC naming
>> transition), viz.:
>> 10.2.0.35      accat-tac nelc-tip
>> 10.2.0.31      cca-tac cca-tip
>> as EXCERPTED from:
>> https://www.tuhs.org/cgi-bin/utree.pl?file=4.2BSD/usr/src/etc/htable/hosts
>>
>> geoff
>>
>>
>> On Sat, Apr 19, 2025 at 2:35 PM Alexander McKenzie via Internet-history <
>> internet-history at elists.isoc.org> wrote:
>>
>>> They became TACs when the management of ARPAnet switched from DARPA to
>> DCA
>>> and login control via user passwords was implemented.  The management
>> shift
>>> happened in mid-1976 and the login control somewhat later. I've never seen
>>> the dash notation before and I don't think that is anything other than a
>>> typo.
>>>
>>> Cheers,
>>> Alex McKenzie
>>>
>>> On Saturday, April 19, 2025 at 05:19:44 PM EDT, the keyboard of geoff
>>> goodfellow via Internet-history<internet-history at elists.isoc.org> wrote:
>>>
>>>
>>> and WHY the dash -TIP to -TAC name change?
>>>
>>> --
>>> Geoff.Goodfellow at iconia.com
>>> living as The Truth is True
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>>>
>> -- 
>> Geoff.Goodfellow at iconia.com
>> living as The Truth is True
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