asn.dev

Observed topology

AS6661 EPT-LU Entreprise des P. et T. Luxembourg

Residential RIPE Cable/DSL/ISP

Upstreams 23 carry this network
Downstreams 41 this network carries
Adjacent (IPv4) 66
Adjacent (IPv6) 35
Upstream graph Who carries AS6661, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS6661 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 23

Networks observed carrying traffic for AS6661: 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 IPv6876
AS5511Orange S.A.TransitIPv436
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv620
AS24482SG.GSHostingIPv4 IPv620
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv620
AS45049Mohamed El BoudduntiResidentialIPv4 IPv620
AS48185team.blue NVUnclassifiedIPv4 IPv620
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv620
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv620
AS50628Leonix Telecom SASUnclassifiedIPv4 IPv620

All 23 upstreams →

Transit

Downstream networks

All 41

Networks for which AS6661 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS206610Mixvoip S.A.UnclassifiedIPv4 IPv62,036
AS198095POST Telecom S.A.UnclassifiedIPv4 IPv6839
AS8883AGUnclassifiedIPv4384
AS11245The Goodyear Tire & Rubber CompanyUnclassifiedIPv4361
AS60752AOSSIA S.A.UnclassifiedIPv4241
AS202438Encevo S.AUnclassifiedIPv4 IPv6234
AS24611Datacenter Luxembourg S.A.HostingIPv4 IPv6210
AS204299KPMG Audit S.a r.l.UnclassifiedIPv4205
AS213785Banque Internationale a Luxembourg SAUnclassifiedIPv4202
AS200129LHISP S.A.UnclassifiedIPv4 IPv6150

All 41 downstreams →

Adjacency

Adjacent networks

All 70

Every AS seen directly next to AS6661 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv65,894
AS206610Mixvoip S.A.UnclassifiedIPv4 IPv62,220
AS198095POST Telecom S.A.UnclassifiedIPv4 IPv6900
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6406
AS8883AGUnclassifiedIPv4384
AS11245The Goodyear Tire & Rubber CompanyUnclassifiedIPv4361
AS24611Datacenter Luxembourg S.A.HostingIPv4 IPv6254
AS60752AOSSIA S.A.UnclassifiedIPv4241
AS202438Encevo S.AUnclassifiedIPv4 IPv6234
AS204299KPMG Audit S.a r.l.UnclassifiedIPv4205

All 70 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.