asn.dev

Observed topology

AS37100 SEACOM-AS

Unclassified APNIC NSP

Upstreams 42 carry this network
Downstreams 1,842 this network carries
Adjacent (IPv4) 1,900
Adjacent (IPv6) 147
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 42

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 IPv654
AS2914NTT America, Inc.TransitIPv440
AS3356Level 3 Parent, LLCTransitIPv4 IPv638
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv636
AS174Cogent Communications, LLCTransitIPv4 IPv624
AS9002RETN LimitedUnclassifiedIPv424
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv419
AS24482SG.GSHostingIPv4 IPv613

All 42 upstreams →

Transit

Downstream networks

All 1,842

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

ASNetworkTypeFamiliesPaths seen
AS37342Movitel, SAResidentialIPv48,922
AS12455Kenyan Post & Telecommunications Company / Telkom Kenya LtdUnclassifiedIPv4 IPv65,423
AS9498BHARTI Airtel Ltd.MobileIPv45,024
AS327687Research and Education Network for UgandaEducationIPv4 IPv64,594
AS16509Amazon.com, Inc.HostingIPv44,341
AS33765TANZANIA TELECOMMUNICATIONS CO. LTDResidentialIPv44,137
AS7713PT Telekomunikasi IndonesiaResidentialIPv43,460
AS327901Level 7 Wireless (Pty) LtdResidentialIPv42,433
AS9009M247 Europe SRLHostingIPv42,265
AS4766Korea TelecomMobileIPv42,136

All 1,842 downstreams →

Adjacency

Adjacent networks

All 1,900

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

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4157,083
AS3257GTT Communications Inc.TransitIPv4 IPv6110,442
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv6100,117
AS6939Hurricane Electric LLCTransitIPv4 IPv676,936
AS6461Zayo BandwidthTransitIPv471,836
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv470,450
AS1299Arelion Sweden ABTransitIPv4 IPv654,720
AS2914NTT America, Inc.TransitIPv452,167
AS174Cogent Communications, LLCTransitIPv4 IPv647,976
AS327708Airtel Rwanda LtdUnclassifiedIPv4 IPv637,785

All 1,900 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-22 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.12M 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.