asn.dev

Observed topology

AS266623 AS266623 - 18.843.555 LTDA

Unclassified LACNIC

Upstreams 7 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 12
Adjacent (IPv6) 8
Upstream graph Who carries AS266623, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS266623 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS266623: 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
AS263276BBG TELECOM LTDAResidentialIPv4 IPv6174
AS265379JULIO CESAR DAS NEVES - MEUnclassifiedIPv4136
AS1031PEER 1031 LLCUnclassifiedIPv4114
AS6939Hurricane Electric LLCTransitIPv4 IPv657
AS999CORIX NETWORKSUnclassifiedIPv412
AS3303Swisscom (Schweiz) AGResidentialIPv47
AS33891Core-Backbone GmbHHostingIPv44

Transit

Downstream networks

inferred

Networks for which AS266623 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS266505RJ Tecnologia Provedores do Brasil LTDA - MEUnclassifiedIPv4298
AS269448Gignet TelecomUnclassifiedIPv4157
AS270946ULTRANET PROVEDOR CUSTODIA LTDAUnclassifiedIPv4 IPv693
AS267535Ajust ConsultingUnclassifiedIPv443
AS270282SIMONE BARBOSA DO NASCIMENTO SOUZA COMUNICACAOUnclassifiedIPv4 IPv636
AS275769NETCENTER FIBRA LTDAUnclassifiedIPv636
AS267180Copnet Comercio e servicos de TelecomunicacoesUnclassifiedIPv616

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS266623 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS263276BBG TELECOM LTDAResidentialIPv4 IPv6768
AS266505RJ Tecnologia Provedores do Brasil LTDA - MEUnclassifiedIPv4298
AS269448Gignet TelecomUnclassifiedIPv4 IPv6224
AS1031PEER 1031 LLCUnclassifiedIPv4 IPv6171
AS6939Hurricane Electric LLCTransitIPv4 IPv6151
AS265379JULIO CESAR DAS NEVES - MEUnclassifiedIPv4136
AS270946ULTRANET PROVEDOR CUSTODIA LTDAUnclassifiedIPv4 IPv693
AS267535Ajust ConsultingUnclassifiedIPv443
AS270282SIMONE BARBOSA DO NASCIMENTO SOUZA COMUNICACAOUnclassifiedIPv4 IPv636
AS275769NETCENTER FIBRA LTDAUnclassifiedIPv636

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-07 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 72.97M 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.