IP renumbering timeframe

Thu May 30 17:19:28 UTC 2002

On Thu, 30 May 2002, Richard A Steenbergen wrote:

> Total ASes present in the Internet Routing Table:             13122
> Origin-only ASes present in the Internet Routing Table:       11366
> Origin ASes announcing only one prefix:                        4997
> Transit ASes present in the Internet Routing Table:            1756
> Transit-only ASes present in the Internet Routing Table:         53
> 
> So, only around 50% of the allocated ASNs are actually used, and 5000 of
> them are announcing only one prefix. So lets just take a rough guess and

That is because once an ASN is allocated it almost never is recovered by
the 3 RIRs (RIPE is probably the best organized of the 3 and it never gets
around to reclaiming "dead" IP address space as well). I have revoked
quite a few ASNs: http://www.isoc.org.il/ipolicy.html but it involves
quarterly checking at major NAPs, emails to the contacts, finding new
contacts, registered postal letters and plenty of followup. Most LIRs just
don't bother since reclaiming a "dead" ASN is a non-revenue affair.

> say the number of people who could benefit from having a single region to
> get /24s is around 5000, perhaps lower.
> 
> Richard A Steenbergen <ras at e-gerbil.net>     http://www.e-gerbil.net/ras
> PGP Key ID: 0x138EA177(67 29 D7 BC E8 18 3E DAB2 46 B3 D8 14 36 FE B6)
> 

Hank Nussbacher