asn.dev

Observed topology

AS28171 AS28171 - S. O. do Brasil Telecomunicacoes LTDA ME

Residential LACNIC Cable/DSL/ISP

Upstreams 4 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 9
Upstream graph Who carries AS28171, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS28171 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS28171: 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
AS16735ALGAR TELECOM S/AUnclassifiedIPv4 IPv6348
AS264409Huge Solucoes Corporativas LtdaUnclassifiedIPv4 IPv6242
AS24482SG.GSHostingIPv4 IPv6119
AS35280F5 Networks SARLHostingIPv4 IPv6108

Transit

Downstream networks

inferred

Networks for which AS28171 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS262977ADSNET TELECOM LTDAResidentialIPv4 IPv6732
AS263431SULNET RC INTERNET PROVIDER INFORMATICA LTDAUnclassifiedIPv4 IPv6192
AS270538MEGA CONNECT SERVICOS ESPECIAIS LTDA.UnclassifiedIPv4 IPv6116
AS263540Unimed Volta Redonda de Coop. de Trabalho MedicoUnclassifiedIPv4 IPv691
AS53040ALTA CONEXAO TELECOMUNICACOES LTDAUnclassifiedIPv460
AS61841FUNDACAO EDUCACIONAL SEVERINO SOMBRAUnclassifiedIPv4 IPv65
AS61622VIA MS SOLUCOES DIGITAISUnclassifiedIPv42

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS28171 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS16735ALGAR TELECOM S/AUnclassifiedIPv4 IPv61,287
AS262977ADSNET TELECOM LTDAResidentialIPv4 IPv6882
AS264409Huge Solucoes Corporativas LtdaUnclassifiedIPv4 IPv6666
AS263431SULNET RC INTERNET PROVIDER INFORMATICA LTDAUnclassifiedIPv4 IPv6192
AS270538MEGA CONNECT SERVICOS ESPECIAIS LTDA.UnclassifiedIPv4 IPv6160
AS24482SG.GSHostingIPv4 IPv6144
AS35280F5 Networks SARLHostingIPv4 IPv6108
AS263540Unimed Volta Redonda de Coop. de Trabalho MedicoUnclassifiedIPv4 IPv691
AS53040ALTA CONEXAO TELECOMUNICACOES LTDAUnclassifiedIPv460
AS61841FUNDACAO EDUCACIONAL SEVERINO SOMBRAUnclassifiedIPv4 IPv65

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.