LIVE
5 ASNS PEERINGIPv4 1.078.331 PREFIXESIPv6 242.087 PREFIXESRPKI 1.004.065 VRPS17 PROBES ONLINELAST UPDATE JUST NOW
TREN
Rasat
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RASAT / AS

AS53352

Henry Ford Health System
17 announcements4 upstreams4 peers
TIER 1Henry Ford Health SystemHFHS-ASNAS53352Great Lakes Comnet, Inc.GREAT-LAKES-COMNETAS30517Comcast Cable Communications, LLCCMCSAS33668Crown Castle Fiber LLCCROWNCASTLE-AS46887AS46887Comcast Cable Communications, LLCCOMCAST-7922AS7922Arelion Sweden ABTWELVE99AS1299NTT America, Inc.NTT-DATA-2914AS2914GTT Communications Inc.GTT-BACKBONEAS3257Level 3 Parent, LLCLEVEL3AS3356Zayo BandwidthZAYO-6461AS6461
UPSTREAMS4
ASNDESCRIPTIONIPv4IPv6OBSERVATIONS
AS46887Crown Castle Fiber LLC✓✗29
AS3356Level 3 Parent, LLC✓✗16
AS30517Great Lakes Comnet, Inc.✓✗16
AS33668Comcast Cable Communications, LLC✓✗7

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 2 hours ago.