asn.dev

Observed topology

AS56665 TANGO-PROXIMUS_NXT Proximus Luxembourg S.A.

Residential RIPE

Upstreams 33 carry this network
Downstreams 20 this network carries
Adjacent (IPv4) 52
Adjacent (IPv6) 27
Upstream graph Who carries AS56665, and who carries them, drawn as a map up to the transit-free core. 13 exchanges Where AS56665 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 33

Networks observed carrying traffic for AS56665: 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 IPv6329
AS6774Belgacom International Carrier Services SAUnclassifiedIPv4 IPv6252
AS2914NTT America, Inc.TransitIPv4 IPv6159
AS3356Level 3 Parent, LLCTransitIPv4150
AS1299Arelion Sweden ABTransitIPv4 IPv6109
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv684
AS174Cogent Communications, LLCTransitIPv4 IPv660
AS50304Blix Solutions ASUnclassifiedIPv450
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv634
AS24482SG.GSHostingIPv4 IPv634

All 33 upstreams →

Transit

Downstream networks

All 20

Networks for which AS56665 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS210834LU-CIX Management G.I.E.HostingIPv4 IPv6543
AS25367Proximus Luxembourg S.A.UnclassifiedIPv4211
AS51497Innova Co S.A.R.L.UnclassifiedIPv4180
AS208406BANK DEGROOF PETERCAM SAUnclassifiedIPv4180
AS2602Fondation RESTENAEducationIPv4 IPv6153
AS8632Luxembourg Online S.A.ResidentialIPv4144
AS25094Centre des technologies de l'information de l'EtatUnclassifiedIPv4141
AS202438Encevo S.AUnclassifiedIPv4110
AS204299KPMG Audit S.a r.l.UnclassifiedIPv4110
AS44708PAUL WURTH S.A.UnclassifiedIPv482

All 20 downstreams →

Adjacency

Adjacent networks

All 58

Every AS seen directly next to AS56665 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6774Belgacom International Carrier Services SAUnclassifiedIPv4 IPv6872
AS210834LU-CIX Management G.I.E.HostingIPv4 IPv6585
AS6939Hurricane Electric LLCTransitIPv4 IPv6489
AS3356Level 3 Parent, LLCTransitIPv4419
AS2914NTT America, Inc.TransitIPv4 IPv6347
AS1299Arelion Sweden ABTransitIPv4 IPv6336
AS51497Innova Co S.A.R.L.UnclassifiedIPv4304
AS174Cogent Communications, LLCTransitIPv4 IPv6257
AS25367Proximus Luxembourg S.A.UnclassifiedIPv4211
AS208406BANK DEGROOF PETERCAM SAUnclassifiedIPv4180

All 58 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-03 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.45M 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.