asn.dev

Observed topology

AS204861 CODISATS

Unclassified RIPE

Upstreams 8 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 14
Adjacent (IPv6) 5
Upstream graph Who carries AS204861, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS204861 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS204861: 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
AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALUnclassifiedIPv4 IPv6126
AS174Cogent Communications, LLCTransitIPv472
AS6939Hurricane Electric LLCTransitIPv4 IPv645
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv614
AS24482SG.GSHostingIPv4 IPv65
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv65
AS5405Inter.link GmbHUnclassifiedIPv41
AS33891Core-Backbone GmbHHostingIPv41

Transit

Downstream networks

inferred

Networks for which AS204861 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203244TELEVISION TRUJILLO S.L.UnclassifiedIPv4657
AS211902CINCANETWORKS SLUnclassifiedIPv4392
AS204758CABINAS TELEFONICAS DEL SUR, S.L.UnclassifiedIPv4240
AS208735BIWIFI TELECOMUNICACIONES S.L.UnclassifiedIPv4118
AS210395INTERNET MANTENIMIENTOS SLUnclassifiedIPv416

Adjacency

Adjacent networks

All 14

Every AS seen directly next to AS204861 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONALUnclassifiedIPv4 IPv61,524
AS203244TELEVISION TRUJILLO S.L.UnclassifiedIPv4657
AS8903LYNTIA NETWORKS S.A.UnclassifiedIPv4604
AS211902CINCANETWORKS SLUnclassifiedIPv4392
AS174Cogent Communications, LLCTransitIPv4337
AS6939Hurricane Electric LLCTransitIPv4 IPv6248
AS204758CABINAS TELEFONICAS DEL SUR, S.L.UnclassifiedIPv4240
AS208735BIWIFI TELECOMUNICACIONES S.L.UnclassifiedIPv4118
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6104
AS24482SG.GSHostingIPv4 IPv635

All 14 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-24 16:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.19M 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.