asn.dev

Observed topology

AS263250 Barbosa & Costa Ltda

Unclassified LACNIC Cable/DSL/ISP

Upstreams 4 carry this network
Downstreams 14 this network carries
Adjacent (IPv4) 17
Adjacent (IPv6) 14
Upstream graph Who carries AS263250, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS263250 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS263250: 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
AS61832DB3 SERVICOS DE TELECOMUNICACOES S.AUnclassifiedIPv4 IPv61,998
AS267613ELETRONET S.A.UnclassifiedIPv4 IPv61,271
AS28368SOBRALNET SERVICOS E TELECOMUNICACOES LTDA - MEResidentialIPv4 IPv613
AS274766MAIS FIBRA EMPRESARIAL LTDAUnclassifiedIPv42

Transit

Downstream networks

All 14

Networks for which AS263250 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS263436POLLYNET TELECOM EIRELIUnclassifiedIPv4 IPv6874
AS268455MASS TELECOMUnclassifiedIPv4 IPv6486
AS61904POLLYNET TELECOM EIRELIUnclassifiedIPv4480
AS265337SYNDIGITAL TELECOMUNICACOES LTDAUnclassifiedIPv4 IPv6279
AS269317MM TELECOMUnclassifiedIPv4 IPv6273
AS267374ICOS TELECOM LTDA - MEUnclassifiedIPv4 IPv6213
AS264133TX WEB TELECOM LTDAUnclassifiedIPv4 IPv6124
AS264146REDE CERRADO TELECOMUnclassifiedIPv4 IPv693
AS269487PRIME TELECOM LTDAUnclassifiedIPv4 IPv693
AS270286CONECT ISP - SERVICOS DE COMUNICACAO MULTIMID LTDAUnclassifiedIPv4 IPv693

All 14 downstreams →

Adjacency

Adjacent networks

All 17

Every AS seen directly next to AS263250 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS267613ELETRONET S.A.UnclassifiedIPv4 IPv63,996
AS61832DB3 SERVICOS DE TELECOMUNICACOES S.AUnclassifiedIPv4 IPv62,641
AS263436POLLYNET TELECOM EIRELIUnclassifiedIPv4 IPv6874
AS268455MASS TELECOMUnclassifiedIPv4 IPv6489
AS61904POLLYNET TELECOM EIRELIUnclassifiedIPv4480
AS265337SYNDIGITAL TELECOMUNICACOES LTDAUnclassifiedIPv4 IPv6372
AS269317MM TELECOMUnclassifiedIPv4 IPv6273
AS267374ICOS TELECOM LTDA - MEUnclassifiedIPv4 IPv6213
AS262424InterSoft Internet Software EIRELIUnclassifiedIPv4 IPv6145
AS264133TX WEB TELECOM LTDAUnclassifiedIPv4 IPv6124

All 17 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-22 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.12M 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.