nanog mailing list archives

Re: AS Numbers unused/sitting for long periods of time


From: Steve Noble <snoble () sonn com>
Date: Tue, 02 Jan 2018 15:11:57 -0800

Inaccurate whois data from ARIN is not a good way to tell anything as ARIN is terrible to deal with when you need to update an address or phone number or anything. I know personally as I had to fight for years to update the data on an ASN that ARIN was billing me to manage the data for.

Chris Adams <mailto:cma () cmadams net>
January 2, 2018 at 2:56 PM

I know of two (from a former job) that pre-date ARIN that haven't been
used since 1999 because those two companies no longer exist (nor AFAIK
does any successor company). The whois information is bogus at this
point, but I couldn't prove that.

I expect that AS numbers allocated by ARIN and other current RIRs are
not abandoned like that (since they charge annual fees, and I assume
they reclaim for non-payment), so the number of abandoned AS numbers is
probably not growing significantly (and would not grow beyond the
pre-RIR pool).

With 32 bit AS numbers though, what's the point of making an effort to
reclaim the old AS numbers? BGP4 has been shown to handle alternate
length AS numbers, so if somehow 4 billion are allocated, it probably
won't be a big deal to extend BGP again.

James Breeden <mailto:James () arenalgroup co>
January 2, 2018 at 2:46 PM
Before I take this to the ARIN PPML, wanted to get NANOG's thoughts.


I'm amazed at the number of AS numbers that are assigned, but not actively being used. I'm not talking just like they are offline for a week or month, this is complete non-use of the AS in the global routing table within *years*. They are completely abandoned resources - Whois data is inaccurate by 5-10 years, no routeviews data in the same time period, the owning organization (if you can find it) scratches their heads about responding whether they use it or not, etc.


I know we're currently not in a push to get AS numbers or close to exhaustion, but I do believe that people who have global AS numbers should have a requirement to use them or return them to the global pool. Am I the only one thinking this?


And before you come back with "Well they may be using it internally where it doesn't need to be in the GRT" - that's why we have Private AS numbers.


I.e. some form of ARIN or global policy that basically says "If AS number not routed or whois updated or used in 24 months, said AS number can be public noticed via mailing list and website and then revoked and reissued to a pending, approved AS request"


Just thinking aloud. Happy New Year all!


James W. Breeden

Managing Partner



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