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6 ASNS PEERINGIPv4 1.086.186 PREFIXESIPv6 242.341 PREFIXESRPKI 1.004.200 VRPS17 PROBES ONLINELAST UPDATE JUST NOW
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RASAT / AS

AS18438

Brown Brothers Harriman & Company
20 announcements8 upstreams8 peers
TIER 1Brown Brothers Harriman & CompanyBROWNBAS18438Crown Castle Fiber LLCCROWNCASTLE-AS46887AS46887F5, Inc.DEFENSE-NETAS55002Wave BroadbandAS-WAVE-1AS11404F5 Networks SARLF5AS35280The Constant Company, LLCAS-VULTRAS20473Cogent Communications, LLCCOGENT-174AS174Arelion Sweden ABTWELVE99AS1299NTT America, Inc.NTT-DATA-2914AS2914GTT Communications Inc.GTT-BACKBONEAS3257Level 3 Parent, LLCLEVEL3AS3356Zayo BandwidthZAYO-6461AS6461
UPSTREAMS8
ASNDESCRIPTIONIPv4IPv6OBSERVATIONS
AS55002F5, Inc.✓✗44
AS174Cogent Communications, LLC✓✗8
AS46887Crown Castle Fiber LLC✓✗8
AS3356Level 3 Parent, LLC✓✗6
AS2516KDDI CORPORATION✓✗4
AS8220COLT Technology Services Group Limited✓✗4
AS54004Cablevision Lightpath LLC✓✗4
AS9141P4 Sp. z o.o.✓✗2

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 days ago.