asn.dev

Observed topology

AS37100 SEACOM Limited - SEACOM Limited

Unclassified APNIC

Upstreams 46 carry this network
Downstreams 1,849 this network carries
Adjacent (IPv4) 1,901
Adjacent (IPv6) 148
Upstream graph Who carries AS37100, and who carries them, drawn as a map up to the transit-free core. 18 exchanges Where AS37100 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 46

Networks observed carrying traffic for AS37100: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6102
AS6939Hurricane Electric LLCTransitIPv4 IPv677
AS3257GTT Communications Inc.TransitIPv4 IPv657
AS2914NTT America, Inc.TransitIPv440
AS3356Level 3 Parent, LLCTransitIPv4 IPv638
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv636
AS174Cogent Communications, LLCTransitIPv4 IPv624
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv416
AS9002RETN LimitedUnclassifiedIPv413
AS24482SG.GSHostingIPv4 IPv613

All 46 upstreams →

Transit

Downstream networks

All 1,849

Networks for which AS37100 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS37342Movitel, SAResidentialIPv411,454
AS33765TANZANIA TELECOMMUNICATIONS CO. LTDResidentialIPv45,778
AS12455Kenyan Post & Telecommunications Company / Telkom Kenya LtdUnclassifiedIPv4 IPv65,282
AS9498BHARTI Airtel Ltd.MobileIPv45,059
AS327687Research and Education Network for UgandaEducationIPv4 IPv64,578
AS16509Amazon.com, Inc.HostingIPv44,315
AS7552Viettel GroupMobileIPv43,944
AS7713PT Telekomunikasi IndonesiaResidentialIPv43,438
AS327901Level 7 Wireless (Pty) LtdResidentialIPv42,766
AS9009M247 Europe SRLHostingIPv42,294

All 1,849 downstreams →

Adjacency

Adjacent networks

All 1,901

Every AS seen directly next to AS37100 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv6155,886
AS3257GTT Communications Inc.TransitIPv4 IPv6118,385
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv696,386
AS6939Hurricane Electric LLCTransitIPv4 IPv679,367
AS6461Zayo BandwidthTransitIPv470,534
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv466,702
AS1299Arelion Sweden ABTransitIPv4 IPv653,491
AS2914NTT America, Inc.TransitIPv449,598
AS174Cogent Communications, LLCTransitIPv449,505
AS9002RETN LimitedUnclassifiedIPv436,475

All 1,901 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.