Observed topology

AS3243 MEO-RESIDENCIAL

Residential RIPE

Upstreams 1 carry this network

Downstreams 8 this network carries

Adjacent (IPv4) 9

Adjacent (IPv6) 2

Upstream graph Who carries AS3243, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS3243 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS3243: 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.

AS	Network	Type	Families	Paths seen
AS8657	SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	Unclassified	IPv4 IPv6	984

Transit

Downstream networks

inferred

Networks for which AS3243 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS6773	Forward Payment Solutions, S.A.	Unclassified	IPv4	232
AS13335	Cloudflare, Inc.	Hosting	IPv4 IPv6	92
AS9118	Banco, S.A.	Unclassified	IPv4	65
AS34873	Administracao Central do Sistema de Saude, I.P.	Unclassified	IPv4	65
AS41159	INSTITUTO DA MOBILIDADE E DOS TRANSPORTES TERRESTRES I.P	Unclassified	IPv4	65
AS200361	CONCENTRIX SERVICES BULGARIA EOOD	Unclassified	IPv4	43
AS25253	CAIXA GERAL DE DEPOSITOS, SA	Unclassified	IPv4	42
AS31497	Comissao do Mercado de Valores Mobiliarios	Unclassified	IPv4	42

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS3243 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS8657	SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	Unclassified	IPv4 IPv6	1,630
AS6773	Forward Payment Solutions, S.A.	Unclassified	IPv4	232
AS13335	Cloudflare, Inc.	Hosting	IPv4 IPv6	92
AS9118	Banco, S.A.	Unclassified	IPv4	65
AS34873	Administracao Central do Sistema de Saude, I.P.	Unclassified	IPv4	65
AS41159	INSTITUTO DA MOBILIDADE E DOS TRANSPORTES TERRESTRES I.P	Unclassified	IPv4	65
AS200361	CONCENTRIX SERVICES BULGARIA EOOD	Unclassified	IPv4	43
AS25253	CAIXA GERAL DE DEPOSITOS, SA	Unclassified	IPv4	42
AS31497	Comissao do Mercado de Valores Mobiliarios	Unclassified	IPv4	42

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.