asn.dev

Observed topology

AS51945 CONNETU

Unclassified RIPE NSP

Upstreams 25 carry this network
Downstreams 11 this network carries
Adjacent (IPv4) 33
Adjacent (IPv6) 20
Upstream graph Who carries AS51945, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS51945 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 25

Networks observed carrying traffic for AS51945: 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 IPv663
AS1299Arelion Sweden ABTransitIPv4 IPv656
AS2914NTT America, Inc.TransitIPv4 IPv645
AS174Cogent Communications, LLCTransitIPv4 IPv639
AS3356Level 3 Parent, LLCTransitIPv4 IPv625
AS3257GTT Communications Inc.TransitIPv416
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv613
AS50304Blix Solutions ASUnclassifiedIPv48
AS24482SG.GSHostingIPv4 IPv66
AS48185team.blue NVUnclassifiedIPv4 IPv66

All 25 upstreams →

Transit

Downstream networks

All 11

Networks for which AS51945 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS214285Above Bar Cyber LimitedUnclassifiedIPv4 IPv6273
AS49375No One Internet LtdResidentialIPv4 IPv6271
AS48631Odine Solutions FZ-LLCUnclassifiedIPv4236
AS205373Rightmove Group LimitedUnclassifiedIPv4 IPv6162
AS209082Swlines LtdUnclassifiedIPv4118
AS204258Vive Technologies LtdUnclassifiedIPv4 IPv695
AS203421Baltic Broadband LimitedResidentialIPv487
AS205917Fluidone Ltd.UnclassifiedIPv467
AS210062Barritel LtdUnclassifiedIPv4 IPv641
AS59820Astro Communications LTDUnclassifiedIPv433

All 11 downstreams →

Adjacency

Adjacent networks

All 37

Every AS seen directly next to AS51945 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv6305
AS3356Level 3 Parent, LLCTransitIPv4 IPv6305
AS6939Hurricane Electric LLCTransitIPv4 IPv6280
AS214285Above Bar Cyber LimitedUnclassifiedIPv4 IPv6273
AS49375No One Internet LtdResidentialIPv4 IPv6271
AS48631Odine Solutions FZ-LLCUnclassifiedIPv4236
AS1299Arelion Sweden ABTransitIPv4 IPv6211
AS174Cogent Communications, LLCTransitIPv4 IPv6206
AS205373Rightmove Group LimitedUnclassifiedIPv4 IPv6162
AS209082Swlines LtdUnclassifiedIPv4118

All 37 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.