ASN in use, but no whois data?

Fri Feb 25 22:55:56 UTC 2022

The AS customer could've churned from ARIN, freeing the ASN but leaving
*technically* valid IRRs in databases such as RADb (which seems to be where
they originate): https://i.imgur.com/r5xx7Y6.png

..thus allowing them to continue to announce their routes under that ASN as
usual, even though technically it doesn't exist in the ARIN WHOIS.

Phin

On Fri, Feb 25, 2022 at 10:47 PM Matt Harris <matt at netfire.net> wrote:

> Hey folks,
> I'm looking at an ASN 394183 and I can't find any whois or other contact
> data. I've checked globally and then also ARIN directly and literally
> nothing as if it weren't registered. It's announcing prefixes, at least one
> of which is IRR invalid part of a larger old PSINET block, though, and I'm
> seeing them in the global routing table.
>
> Anyone have any idea how this could happen where an ASN is in use,
> transiting several major providers to the internet, but no whois data as if
> it didn't exist?
>
> Thanks,
> Matt
>
> Matt Harris
> | Infrastructure Lead
> 816‑256‑5446
> | Direct
> Looking for help?
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