asn.dev

Observed topology

AS203329 ESHELTER NTT Global Data Centers EMEA GmbH

Unclassified RIPE

Upstreams 26 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 29
Adjacent (IPv6) 20
Upstream graph Who carries AS203329, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS203329 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 26

Networks observed carrying traffic for AS203329: 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
AS2914NTT America, Inc.TransitIPv4 IPv6283
AS5405Inter.link GmbHUnclassifiedIPv4 IPv6229
AS1299Arelion Sweden ABTransitIPv4 IPv6169
AS6939Hurricane Electric LLCTransitIPv4 IPv6110
AS3320Deutsche Telekom AGMobileIPv4 IPv663
AS8220COLT Technology Services Group LimitedHostingIPv451
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv633
AS33891Core-Backbone GmbHHostingIPv417
AS24482SG.GSHostingIPv4 IPv616
AS6797GlobalConnect ABUnclassifiedIPv413

All 26 upstreams →

Transit

Downstream networks

inferred

Networks for which AS203329 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS62075Julian LannertUnclassifiedIPv4 IPv6203
AS50246360 Treasury Systems AGUnclassifiedIPv461
AS47219NTT Global Data Centers EMEA UK Ltd.HostingIPv4 IPv650
AS208025RSG Group GmbHUnclassifiedIPv449
AS213314WallCloud GmbHUnclassifiedIPv4 IPv637
AS715WoodyNet, Inc.UnclassifiedIPv634
AS209419Julian LannertUnclassifiedIPv620
AS29205VERCOM S.A.UnclassifiedIPv41

Adjacency

Adjacent networks

All 34

Every AS seen directly next to AS203329 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS5405Inter.link GmbHUnclassifiedIPv4 IPv6364
AS2914NTT America, Inc.TransitIPv4 IPv6319
AS1299Arelion Sweden ABTransitIPv4 IPv6263
AS62075Julian LannertUnclassifiedIPv4 IPv6203
AS6939Hurricane Electric LLCTransitIPv4 IPv6139
AS3320Deutsche Telekom AGMobileIPv4 IPv683
AS50246360 Treasury Systems AGUnclassifiedIPv461
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv656
AS8220COLT Technology Services Group LimitedHostingIPv451
AS47219NTT Global Data Centers EMEA UK Ltd.HostingIPv4 IPv650

All 34 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M 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.