Observed topology

AS5377 MARLINK-EMEA

Unclassified RIPE

Upstreams 13 carry this network

Downstreams 5 this network carries

Adjacent (IPv4) 16

Adjacent (IPv6) 8

Upstream graph Who carries AS5377, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS5377 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 13

Networks observed carrying traffic for AS5377: 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
AS1299	Arelion Sweden AB	Transit	IPv4 IPv6	360
AS5511	Orange S.A.	Transit	IPv4 IPv6	269
AS3356	Level 3 Parent, LLC	Transit	IPv4 IPv6	212
AS2119	Telenor Norge AS	Mobile	IPv4 IPv6	140
AS20776	Outremer Telecom SAS	Unclassified	IPv4	118
AS6939	Hurricane Electric LLC	Transit	IPv4 IPv6	102
AS174	Cogent Communications, LLC	Transit	IPv4	78
AS2116	GLOBALCONNECT AS	Residential	IPv4 IPv6	39
AS3257	GTT Communications Inc.	Transit	IPv4	10
AS7575	Australian Academic and Research Network (AARNet)	Education	IPv4	2

All 13 upstreams →

Transit

Downstream networks

inferred

Networks for which AS5377 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS37052	United Nations Office Nairobi (UNON)	Unclassified	IPv4	59
AS265745	SOCIETE PUBLIC LOCALE POUR LAMENAGEMENT NUMERIQUE DE LA GUYANE	Unclassified	IPv4	59
AS209980	Marlink AS	Unclassified	IPv4	51
AS329307	ITC Global Communication Technologies Limited	Unclassified	IPv6	33
AS44933	Marlink AS	Unclassified	IPv4	18

Adjacency

Adjacent networks

All 18

Every AS seen directly next to AS5377 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS1299	Arelion Sweden AB	Transit	IPv4 IPv6	421
AS5511	Orange S.A.	Transit	IPv4 IPv6	302
AS3356	Level 3 Parent, LLC	Transit	IPv4 IPv6	261
AS20776	Outremer Telecom SAS	Unclassified	IPv4	177
AS2119	Telenor Norge AS	Mobile	IPv4 IPv6	140
AS6939	Hurricane Electric LLC	Transit	IPv4 IPv6	120
AS174	Cogent Communications, LLC	Transit	IPv4	78
AS37052	United Nations Office Nairobi (UNON)	Unclassified	IPv4	59
AS265745	SOCIETE PUBLIC LOCALE POUR LAMENAGEMENT NUMERIQUE DE LA GUYANE	Unclassified	IPv4	59
AS209980	Marlink AS	Unclassified	IPv4	51

All 18 adjacent →

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.