LIVE
5 ASNS PEERINGIPv4 1.067.478 PREFIXESIPv6 242.012 PREFIXESRPKI 1.002.271 VRPS17 PROBES ONLINELAST UPDATE JUST NOW
TREN
Rasat
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RASAT / AS

AS25978

Rush University Medical Center
5 announcements4 upstreams4 peers
TIER 1Rush University Medical CenterRUSH-EXTERNALAS25978Comcast Cable Communications, LLCCOMCAST-33491AS33491Crown Castle Fiber LLCCROWNCASTLE-AS46887AS46887Comcast Cable Communications, LLCCOMCAST-7922AS7922Arelion Sweden ABTWELVE99AS1299GTT Communications Inc.GTT-BACKBONEAS3257Level 3 Parent, LLCLEVEL3AS3356Zayo BandwidthZAYO-6461AS6461
UPSTREAMS4
ASNDESCRIPTIONIPv4IPv6OBSERVATIONS
AS3356Level 3 Parent, LLC✓✗6
AS6461Zayo Bandwidth✓✗6
AS33491Comcast Cable Communications, LLC✓✗4
AS46887Crown Castle Fiber LLC✓✗4

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.