Observed topology

AS27901 AS27901 - Pacifico Cable SPA.

Residential APNIC Cable/DSL/ISP

Upstreams 3 carry this network

Downstreams 8 this network carries

Adjacent (IPv4) 12

Adjacent (IPv6) 3

Upstream graph Who carries AS27901, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS27901 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS27901: 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
AS174	Cogent Communications, LLC	Transit	IPv4 IPv6	2,032
AS6762	TELECOM ITALIA SPARKLE S.p.A.	Transit	IPv4 IPv6	1,230
AS6939	Hurricane Electric LLC	Transit	IPv4	64

Transit

Downstream networks

inferred

Networks for which AS27901 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS274199	INGENIERIA INVERSIONES TECNOLOGIA Y CONSTRUCCION ENGINEERING SPA	Unclassified	IPv4 IPv6	89
AS54994	Meteverse Limited.	Unclassified	IPv4	60
AS274024	COOPERATIVA DE SERVICIOS DE TELECOMUNICACIONES Y TECNOLOGIA LIMITADA	Unclassified	IPv4	59
AS274136	DB TERRA CHILE HOLDCO SpA	Unclassified	IPv4	57
AS267926	ROBERTO MENA OYARZUN COMUNICACIONES EIRL	Unclassified	IPv4	46
AS273955	PABLO ESTEBAN JANA MARTINEZ SERVICIOS WEB Spa	Unclassified	IPv4	33
AS265656	ANACONDAWEB S.A.	Unclassified	IPv4	14
AS273025	Pacifico Cable SPA.	Unclassified	IPv4	1

Adjacency

Adjacent networks

All 12

Every AS seen directly next to AS27901 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS174	Cogent Communications, LLC	Transit	IPv4 IPv6	2,191
AS6762	TELECOM ITALIA SPARKLE S.p.A.	Transit	IPv4 IPv6	1,445
AS274199	INGENIERIA INVERSIONES TECNOLOGIA Y CONSTRUCCION ENGINEERING SPA	Unclassified	IPv4 IPv6	89
AS6939	Hurricane Electric LLC	Transit	IPv4	64
AS54994	Meteverse Limited.	Unclassified	IPv4	60
AS274024	COOPERATIVA DE SERVICIOS DE TELECOMUNICACIONES Y TECNOLOGIA LIMITADA	Unclassified	IPv4	59
AS274136	DB TERRA CHILE HOLDCO SpA	Unclassified	IPv4	57
AS267926	ROBERTO MENA OYARZUN COMUNICACIONES EIRL	Unclassified	IPv4	46
AS273955	PABLO ESTEBAN JANA MARTINEZ SERVICIOS WEB Spa	Unclassified	IPv4	33
AS7004	TELEFONICA CHILE S.A.	Unclassified	IPv4	15

All 12 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.