asn.dev

Observed topology

AS766 RedIRIS Entidad Publica Empresarial Red.es

Unclassified RIPE Educational/Research

Upstreams 10 carry this network
Downstreams 22 this network carries
Adjacent (IPv4) 31
Adjacent (IPv6) 19
Upstream graph Who carries AS766, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS766 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS766: 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
AS21320GEANT VerenigingUnclassifiedIPv4 IPv6639
AS3356Level 3 Parent, LLCTransitIPv4 IPv6367
AS6939Hurricane Electric LLCTransitIPv4 IPv6295
AS9002RETN LimitedUnclassifiedIPv4 IPv6183
AS20965GEANT VerenigingUnclassifiedIPv4 IPv6159
AS174Cogent Communications, LLCTransitIPv4 IPv6155
AS3303Swisscom (Schweiz) AGResidentialIPv460
AS33891Core-Backbone GmbHHostingIPv460
AS37721Virtual Technologies & SolutionsResidentialIPv430
AS29632Netassist International EOODUnclassifiedIPv64

Transit

Downstream networks

All 22

Networks for which AS766 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS200521Ministerio de Transformacion Digital y de la Funcion PublicaUnclassifiedIPv4 IPv62,779
AS13041Consorci de Serveis Universitaris de CatalunyaUnclassifiedIPv4 IPv6430
AS288European Space Agency (ESA)UnclassifiedIPv4427
AS34511Fundacion IntegraUnclassifiedIPv4 IPv6341
AS197829Gobierno de NavarraUnclassifiedIPv4298
AS214516Fundacion Universitaria San Pablo-CEUUnclassifiedIPv6222
AS44593Fundacion Centro de Supercomputacion de Castilla y LeonUnclassifiedIPv4 IPv6160
AS198096Junta de AndaluciaUnclassifiedIPv4 IPv6159
AS34285Sociedad Andaluza para el Desarrollo de las Telecomunicaciones S.A. Medio PropioUnclassifiedIPv4122
AS49851Aragonesa de Servicios TelematicosUnclassifiedIPv4122

All 22 downstreams →

Adjacency

Adjacent networks

All 34

Every AS seen directly next to AS766 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS200521Ministerio de Transformacion Digital y de la Funcion PublicaUnclassifiedIPv4 IPv62,779
AS21320GEANT VerenigingUnclassifiedIPv4 IPv62,671
AS6939Hurricane Electric LLCTransitIPv4 IPv61,583
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,272
AS9002RETN LimitedUnclassifiedIPv4 IPv6836
AS20965GEANT VerenigingUnclassifiedIPv4 IPv6722
AS13041Consorci de Serveis Universitaris de CatalunyaUnclassifiedIPv4 IPv6678
AS174Cogent Communications, LLCTransitIPv4 IPv6538
AS288European Space Agency (ESA)UnclassifiedIPv4427
AS34511Fundacion IntegraUnclassifiedIPv4 IPv6341

All 34 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.