[atlas] How to find the correct ASN of a probe?
Philip Homburg philip.homburg at ripe.net
Mon Jul 7 10:33:59 CEST 2014
Hi Steffie, On 2014/07/04 16:24 , Eravuchira, Steffie Jacob wrote: > Hello, > > The RIPE Atlas probe API  says that the probe with ID 14468 belongs to the > ASN 6871. As per the RIPE stat API , the holder for ASN 6871 is PlusNet PLC,GB. > > I run a traceroute measurement from the same probe (Probe ID 14468) and the > IP address of the second hop ICMP response is "220.127.116.11". But the RIPE stat > API  shows that "18.104.22.168" belongs to the prefix announced by ASN 5089, > NTL Virgin Media Limited,GB. > > Could someone tell me how I can find the correct AS which the probe belongs to? When the probe connects to the Atlas infrastructure, the IPv4 source address comes from a /16 announced by AS 6871. I have no idea why the router in the traceroute is in a different AS. So I'd say that based on its IP address, the probe belongs to AS 6871. Philip