>It doesn't look like the janitors at CAIS (all that are left after 
>their bankruptcy and subsequent asset acquisition, according to 
>rumor...) have managed to get the block you are in sub-registered to 
>NAS. NAS is likely not to be really focused on getting that detail 
>handled, given their own bankruptcy.

Yeah, ain't it fun? And before NAS and CAIS, we were with PSINET. I'm 
waiting to be transitioned to our 4th ISP, which will likely also go 
bankrupt...


>As to the issue of how to determine that, a whois query on any ARIN 
>IP address at ARIN will kick out the whole hierarchy of registered 
>blocks. For example, 66.73.230.190 returns my name (and some address 
>SBC uses for all their customer sub-registrations) on my /29 and 
>Ameritech's name on the enclosing /15.  Your address just returns 
>the CAIS block, indicating that there is no sub-registration.

And I noticed that there was also no "enclosing" block for CAIS. Does 
this mean they are (were) a "tier 1" ISP? I've become more interested 
in figuring out how all this stuff works (who is up/downstream from 
whom), hence my separate post about global routing tables.



Stefan Jeglinski

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