LIVE
5 ASNS PEERINGIPv4 1.078.029 PREFIXESIPv6 241.703 PREFIXESRPKI 1.003.228 VRPS17 PROBES ONLINELAST UPDATE JUST NOW
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RASAT / AS

AS20252

Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University
4 announcements3 upstreams3 peers
TIER 1Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell UniversityJSIWMCAS20252Charter Communications IncTWC-12271-NYCAS12271Crown Castle Fiber LLCCROWNCASTLE-AS46887AS46887Charter Communications IncTWC-7843-BBAS7843Hurricane Electric LLCHURRICANEAS6939Cogent Communications, LLCCOGENT-174AS174Arelion Sweden ABTWELVE99AS1299PCCW Global (HK) Ltd.PCCWG-APAC-HKAS3491Zayo BandwidthZAYO-6461AS6461China Education and Research Network (CERNET)FITI-AS-APAS38255
UPSTREAMS3
ASNDESCRIPTIONIPv4IPv6OBSERVATIONS
AS12271Charter Communications Inc✓✗9
AS46887Crown Castle Fiber LLC✓✗4
AS174Cogent Communications, LLC✓✗3

The figures come from the routing tables our peers give us. This number is seen from 4 separate vantage points. A peer that shares an internet exchange with this network and carries only a small share of its paths is not counted as an upstream: a transit provider carries the whole table, an IX peer only its own announcements. Internet exchange data comes from PeeringDB. Figures are from a dump taken 4 hours ago.