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.
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.