asn.dev

Observed topology

AS16921 INTELIGLOBE-1

Unclassified ARIN NSP

Upstreams 21 carry this network
Downstreams 3 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 19
Upstream graph Who carries AS16921, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS16921 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 21

Networks observed carrying traffic for AS16921: 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
AS174Cogent Communications, LLCTransitIPv4 IPv6437
AS3356Level 3 Parent, LLCTransitIPv4 IPv6412
AS22927Telefonica de ArgentinaMobileIPv4 IPv6330
AS6939Hurricane Electric LLCTransitIPv4 IPv6229
AS14259Gtd Internet S.A.ResidentialIPv4 IPv6151
AS1299Arelion Sweden ABTransitIPv4 IPv6143
AS28188Pronto Net Ltda.UnclassifiedIPv4 IPv6124
AS26615TIM S/AMobileIPv4 IPv6104
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv698
AS14840BR.Digital TelecomUnclassifiedIPv4 IPv697

All 21 upstreams →

Transit

Downstream networks

inferred

Networks for which AS16921 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS270066ASOCIACION DE LOS TESTIGOS DE JEHOVAUnclassifiedIPv415
AS273732TATA COMMUNICATIONS COMUNICACOES E MULTIMIDIA (BR)UnclassifiedIPv62
AS36224HCL AMERICA INCUnclassifiedIPv41

Adjacency

Adjacent networks

All 24

Every AS seen directly next to AS16921 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv6437
AS3356Level 3 Parent, LLCTransitIPv4 IPv6414
AS22927Telefonica de ArgentinaMobileIPv4 IPv6345
AS6939Hurricane Electric LLCTransitIPv4 IPv6229
AS14259Gtd Internet S.A.ResidentialIPv4 IPv6151
AS1299Arelion Sweden ABTransitIPv4 IPv6143
AS28188Pronto Net Ltda.UnclassifiedIPv4 IPv6124
AS26615TIM S/AMobileIPv4 IPv6104
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv698
AS14840BR.Digital TelecomUnclassifiedIPv4 IPv697

All 24 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-16 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.23M 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.