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Ownership of Routers on Both Ends of Transnational Links
- Subject: Ownership of Routers on Both Ends of Transnational Links
- From: beecher at beecher.cc (Tom Beecher)
- Date: Tue, 16 Apr 2019 18:26:39 -0400
- In-reply-to: <CA[email protected]>
- References: <CA[email protected]>
"Can anyone confirm that these are indeed managed by the Chinese ISPs (even
though they are physically located in the US according to the traceroute
and RTT analysis)?"
If a router is part of the CU AS, it's owed and managed by them. Physical
location isn't really relevant to your question.
On Tue, Apr 16, 2019 at 8:53 AM Pengxiong Zhu <pzhu011 at ucr.edu> wrote:
> Howdy folks,
> We are a group of researchers at UC Riverside conducting some measurement
> about transnational networks. In particular, we are interested in studying
> the ownership of routers on the two sides of transnational links.
> We have some concrete questions which we hope someone can shed some light
> on. Basically when we send packets from US/Canada to China, through
> traceroute and the RTT of each hop, we can locate the last hop in the US
> before the packets enter China (*there is a large jump of RTT of 100+ms
> from this hop onwards*). Oftentimes the ownership of such routers is
> These hops whose IPs seem to belong to US or European ISPs (*according to
> BGP info*) but their reverse DNS names have *chinaunicom* in it, which is
> a Chinese ISP.
> AS1299 Telia Company AB
> 18.104.22.168 name = chinaunicom-ic-341501-sjo-b21.c.telia.net.
> 22.214.171.124 name = chinaunicom-ic-302366-las-bb1.c.telia.net.
> 126.96.36.199 name = chinaunicom-ic-127288-sjo-b21.c.telia.net.
> AS701 Verizon Business
> 188.8.131.52 name = chinaunicom-gw.customer.alter.net.
> While the following routers, they don't have a reverse DNS name at all,
> which seem to be uncommon if they were managed by US or European ISPs but
> quite common for Chinese ISPs.
> AS6453 TATA COMMUNICATIONS (AMERICA) INC
> Can anyone confirm that these are indeed managed by the Chinese ISPs (even
> though they are physically located in the US according to the traceroute
> and RTT analysis)?
> Pengxiong Zhu
> Department of Computer Science and Engineering
> University of California, Riverside
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