asn.dev

Observed topology

AS50309 ARCADIZ Arcadiz Telecom NV

Unclassified RIPE

Upstreams 24 carry this network
Downstreams 26 this network carries
Adjacent (IPv4) 53
Adjacent (IPv6) 27
Upstream graph Who carries AS50309, and who carries them, drawn as a map up to the transit-free core. 5 exchanges Where AS50309 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 24

Networks observed carrying traffic for AS50309: 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
AS35280F5 Networks SARLHostingIPv4 IPv6161
AS6939Hurricane Electric LLCTransitIPv4 IPv647
AS39686Eurofiber Nederland BVResidentialIPv4 IPv636
AS1299Arelion Sweden ABTransitIPv4 IPv630
AS174Cogent Communications, LLCTransitIPv4 IPv628
AS50304Blix Solutions ASUnclassifiedIPv4 IPv616
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv68
AS24482SG.GSHostingIPv4 IPv68
AS34019Hivane AssociationUnclassifiedIPv4 IPv68
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv68

All 24 upstreams →

Transit

Downstream networks

All 26

Networks for which AS50309 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS42160DC STAR nvUnclassifiedIPv4 IPv61,367
AS199796Mediahuis Technology & Product Studio NVUnclassifiedIPv4477
AS35660SA EASIUnclassifiedIPv4413
AS196755Sewan Belgium SAResidentialIPv4 IPv6258
AS200353Opgroeien regieUnclassifiedIPv4 IPv6254
AS203944NTT Luxembourg PSF S.A.UnclassifiedIPv4250
AS25194AGC Glass EuropeUnclassifiedIPv4217
AS210017STEL bvbaUnclassifiedIPv4 IPv6201
AS21315EQUANS Zuid-Nederland bvHostingIPv4 IPv6199
AS31511Infrabel NVUnclassifiedIPv4147

All 26 downstreams →

Adjacency

Adjacent networks

All 54

Every AS seen directly next to AS50309 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS35280F5 Networks SARLHostingIPv4 IPv62,862
AS42160DC STAR nvUnclassifiedIPv4 IPv61,781
AS39686Eurofiber Nederland BVResidentialIPv4 IPv6531
AS199796Mediahuis Technology & Product Studio NVUnclassifiedIPv4477
AS6939Hurricane Electric LLCTransitIPv4 IPv6455
AS35660SA EASIUnclassifiedIPv4413
AS1299Arelion Sweden ABTransitIPv4 IPv6383
AS196755Sewan Belgium SAResidentialIPv4 IPv6258
AS174Cogent Communications, LLCTransitIPv4 IPv6257
AS200353Opgroeien regieUnclassifiedIPv4 IPv6254

All 54 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.