[OpenIPMap] Bringing CAIDA's geoloc efforts into the fold

[Emile Aben]

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On 18/06/14 11:47, Sebastian Pesman wrote:
> Hello group,
> 
> 
> Just something I runned into a couple days ago.
> 
> Level3 has normally very good PTR records and leave little room
> for mistakes, but it does happen.
> 
> PTR for *2001:1900:4:3::2c5* Resolves to
> *xe-10-1-0.bar1.Madrid.Level3.net 
> <http://xe-10-1-0.bar1.Madrid.Level3.net>.*
> 
> However, this router is located in Miami, not in Madrid.

btw.

e1000$host 2001:1900:4:3::2c5
5.c.2.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.0.0.0.0.9.1.1.0.0.2.ip6.arpa
domain name pointer xe-10-1-0.bar1.Madrid.Level3.net.
e1000$host 2001:1900:4:3::2c6
6.c.2.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.0.0.0.0.9.1.1.0.0.2.ip6.arpa
domain name pointer NTT-level3-1x10G.Madrid.Level3.net.

So we have 2 now that are known to be wrong.


e1000$host 2001:1900:4:3::2c1
1.c.2.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.0.0.0.0.9.1.1.0.0.2.ip6.arpa
domain name pointer lag-26.ear1.Dallas.Level3.net.
e1000$host 2001:1900:4:3::2c2
2.c.2.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.0.0.0.0.9.1.1.0.0.2.ip6.arpa
domain name pointer NTT-level3-50G.Dallas.Level3.net.

These look correct (from RTT and traceroute path). Level3 seems to
carve out in /126s

cheers,
Emile




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