dotted AS numbers in asn.txt

Jeroen Massar jeroen at
Wed Sep 19 19:23:21 UTC 2007

[stripped hostmaster at from CC]

Andreas Ott wrote:
> Hi,
> since when does contain dotted
> AS numbers? Where is the new formatting documented, asn.h ?

Since 32bit ASN's came out. People have been warned about this and it
has been discussed already a number of times on NANOG.

Also see RFC4893 :)

BTW, my parser scripts just convert them to 32bit numbers, as that is
what they are, nothing more, nothing less.


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