How to find the correct ASN of a probe?
Hello, The RIPE Atlas probe API [1] says that the probe with ID 14468 belongs to the ASN 6871. As per the RIPE stat API [2], 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 "86.4.10.1". But the RIPE stat API [2] shows that "86.4.10.1" 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? [1] https://atlas.ripe.net/api/v1/probe/?id=14468 [2] https://stat.ripe.net/ Kind Regards, Steffie
Hi Steffie, On 2014/07/04 16:24 , Eravuchira, Steffie Jacob wrote:
Hello,
The RIPE Atlas probe API [1] says that the probe with ID 14468 belongs to the ASN 6871. As per the RIPE stat API [2], 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 "86.4.10.1". But the RIPE stat API [2] shows that "86.4.10.1" 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
participants (2)
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Eravuchira, Steffie Jacob -
Philip Homburg