asn.dev

Observed topology

AS273490 FIBRION INTERNET LTDA

Unclassified ARIN Cable/DSL/ISP

Upstreams 6 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 8
Upstream graph Who carries AS273490, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS273490 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS273490: 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
AS6939Hurricane Electric LLCTransitIPv41,305
AS13786Seabras 1 USA, LLCUnclassifiedIPv4 IPv6391
AS2914NTT America, Inc.TransitIPv4378
AS24482SG.GSHostingIPv4105
AS35280F5 Networks SARLHostingIPv490
AS37721Virtual Technologies & SolutionsResidentialIPv490

Transit

Downstream networks

inferred

Networks for which AS273490 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS28165Wireless Comm Services LTDAUnclassifiedIPv4 IPv6938
AS52958Empr.Tec.Inform.Comun. Mun.SP-PRODAM-SP S/AUnclassifiedIPv4 IPv6154
AS28666HOSTLOCATION LTDAHostingIPv460
AS262663METROFLEX TELECOMUNICACOES LTDAUnclassifiedIPv459
AS28594All Net Informatica LtdaUnclassifiedIPv435
AS263909Prefeitura Municipal de SantosUnclassifiedIPv48

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS273490 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv61,738
AS13786Seabras 1 USA, LLCUnclassifiedIPv4 IPv61,325
AS28165Wireless Comm Services LTDAUnclassifiedIPv4 IPv61,299
AS2914NTT America, Inc.TransitIPv4 IPv6972
AS28666HOSTLOCATION LTDAHostingIPv4 IPv6496
AS52958Empr.Tec.Inform.Comun. Mun.SP-PRODAM-SP S/AUnclassifiedIPv4 IPv6154
AS24482SG.GSHostingIPv4 IPv6124
AS35280F5 Networks SARLHostingIPv4103
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv691
AS262663METROFLEX TELECOMUNICACOES LTDAUnclassifiedIPv459

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-23 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.15M 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.