New Team Cymru IP2ASN whois server

Fri Sep 26 09:53:48 UTC 2003

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Pekka Savola wrote:

> On Fri, 26 Sep 2003, Stephen Gill wrote:
> > $ whois -h whois.cymru.com 4.2.2.1
> >     ASN |               IP | Name
> >    3356 |          4.2.2.1 | LEVEL3 Level 3 Communications
> 
> Do you plan to support IPv6 -> ASN mappings as well, at some point?
> 
> Another interesting feature related to that would be 
> supporting special resolution of 6to4 addresses (RFC3056); looking up 
> 2002:0102:0304:: would give you also the info on IP 1.2.3.4.

Indeed _also_, as the source ASN's can differ between the ASN's
used for announcing the IPv4 and the IPv6 prefix.

Fortunatly, except for currently 4 prefixes, there should not
be something more specific than 2002::/16 per RFC3056.

>From GRH:
2002:c2b1:d06e::/48      More specific 6to4 prefix (194.177.208.110/32) from AS5408 
2002:c8a2::/33           More specific 6to4 prefix (200.162.0.0/17) from AS15180 
2002:c8c6:4000::/34      More specific 6to4 prefix (200.198.64.0/18) from AS15180 
2002:c8ca:7000::/36      More specific 6to4 prefix (200.202.112.0/20) from AS15180 

BTW if somebody has a working contact for AS15180, don't mind to
mention it, as they seem quite unresponsive... Others did respond
and cleansed it up btw :)

Greets,
 Jeroen

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