asn.dev

Observed topology

AS52721 TOLEDO FIBRA TELECOMUNICACAO LTDA

Residential LACNIC

Upstreams 7 carry this network
Downstreams 6 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 11
Upstream graph Who carries AS52721, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS52721 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS52721: 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
AS7195EDGEUNO S.A.SUnclassifiedIPv4 IPv6315
AS267613ELETRONET S.A.UnclassifiedIPv4 IPv6235
AS22356Durand do Brasil LtdaUnclassifiedIPv4 IPv6133
AS1031PEER 1031 LLCUnclassifiedIPv418
AS24482SG.GSHostingIPv65
AS33891Core-Backbone GmbHHostingIPv65
AS3303Swisscom (Schweiz) AGResidentialIPv43

Transit

Downstream networks

inferred

Networks for which AS52721 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS264088TOLEDO FIBRA TELECOMUNICACAO LTDAUnclassifiedIPv4 IPv6512
AS266517M.B. SERVICOS EM TELECOMUNICACOES LTDAUnclassifiedIPv4 IPv6174
AS61719SP TELECOMUNICACOES EIRELIUnclassifiedIPv4 IPv6138
AS275615R de Abreu MachadoUnclassifiedIPv631
AS268737CONECT TELECOM COMUNICACAO LTDAUnclassifiedIPv4 IPv66
AS266613COMMTEL TRANSMISSAO DE DADOS E INTERNET LTDAUnclassifiedIPv42

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS52721 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS7195EDGEUNO S.A.SUnclassifiedIPv4 IPv6863
AS264088TOLEDO FIBRA TELECOMUNICACAO LTDAUnclassifiedIPv4 IPv6512
AS267613ELETRONET S.A.UnclassifiedIPv4 IPv6427
AS61719SP TELECOMUNICACOES EIRELIUnclassifiedIPv4 IPv6292
AS22356Durand do Brasil LtdaUnclassifiedIPv4 IPv6250
AS266517M.B. SERVICOS EM TELECOMUNICACOES LTDAUnclassifiedIPv4 IPv6174
AS6939Hurricane Electric LLCTransitIPv4 IPv6129
AS1031PEER 1031 LLCUnclassifiedIPv458
AS268737CONECT TELECOM COMUNICACAO LTDAUnclassifiedIPv4 IPv633
AS275615R de Abreu MachadoUnclassifiedIPv631

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.