On Tue, Apr 16, 2019 at 10:59 AM James Jun <[email protected]> wrote:
> More likely, thease routers are China Unicom's routers in their US POP, not > managed by VZ/Telia. > The /30s in this case are unmanaged IP transit hand-offs, coming in as Nx10G > or 100G. When your > IP transit provider assigns the /30, your router looks like it belongs to > your upstream, common > mistake when interpreting traceroutes[1]. > $ nslookup 62.115.170.56 56.170.115.62.in-addr.arpa name = sjo-b21-link.telia.net. if you model (as james says) each interconnect as a /30 or /31 ... look for the adjacent ip and see the PTR for that ip. (the above is your first link example's peer ip) > [1]: see Page 22 on > https://www.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N47_Sun.pdf > > James
