asn.dev

Observed topology

AS263390 FNT Telecomunicacoes e Acesso a Redes de Internet

Residential LACNIC Cable/DSL/ISP

Upstreams 6 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 9
Upstream graph Who carries AS263390, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS263390 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS263390: 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 LLCTransitIPv4 IPv6459
AS52772SJNET TELECOMUNICACOES - EIRELIUnclassifiedIPv4 IPv6345
AS2914NTT America, Inc.TransitIPv428
AS24482SG.GSHostingIPv4 IPv620
AS35280F5 Networks SARLHostingIPv4 IPv613
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv612

Transit

Downstream networks

inferred

Networks for which AS263390 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS274726Giga Speed Provedor de acessi a internet LTDAUnclassifiedIPv4 IPv678
AS269273Jcnet Telecom LTDAUnclassifiedIPv460
AS264054FALCON COMUNICACOES E INFORMATICAResidentialIPv4 IPv643
AS270896CARIOCA NET SERVICOS DE TELECOMUNICACOES LTDAResidentialIPv41

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS263390 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6480
AS52772SJNET TELECOMUNICACOES - EIRELIUnclassifiedIPv4 IPv6388
AS2914NTT America, Inc.TransitIPv4 IPv6243
AS264054FALCON COMUNICACOES E INFORMATICAResidentialIPv4 IPv6209
AS274726Giga Speed Provedor de acessi a internet LTDAUnclassifiedIPv4 IPv680
AS269273Jcnet Telecom LTDAUnclassifiedIPv460
AS263009FORTE TELECOM LTDA.HostingIPv4 IPv653
AS24482SG.GSHostingIPv4 IPv631
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv619
AS35280F5 Networks SARLHostingIPv4 IPv613

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-29 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.36M 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.