Re:China Telecom's Internet Traffic Misdirection
by martinald on Monday November 05, 2018 @05:42PM
(#18386677)
Somewhat offtopic but which tool shows you the AS number + info alongside the traceroute in the screenshot?
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Re:China Telecom's Internet Traffic Misdirection
by jwbensley on Tuesday November 06, 2018 @02:25AM
(#18389060)
I would guess that the author copied the results into a table and prettified them and added in details like location.
At the top of the screenshot it says "traceroute from London to ..." - no traceroute program knows where it is in the world!
Also the locations of each hop in traceroute NY > Chicago > Ashburn etc., no traceroute program will know where in the world those IPs are. I suspect the author has guestimated based on the reverse DNS record for the IPs and latency.
Traceroute does have the ability to show you the ASNs in a path but that is based on a WHOIS lookup of the IPs that it's discovering. So it could be wrong by assuming the IP address of each hop was announce by the ASN that owns it.