asn.dev

Observed topology

AS51088 A2B A2B IP B.V.

Unclassified RIPE

Upstreams 12 carry this network
Downstreams 26 this network carries
Adjacent (IPv4) 33
Adjacent (IPv6) 26
Upstream graph Who carries AS51088, and who carries them, drawn as a map up to the transit-free core. 5 exchanges Where AS51088 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 12

Networks observed carrying traffic for AS51088: 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
AS8455atom86 BVHostingIPv4 IPv61,870
AS3257GTT Communications Inc.TransitIPv4 IPv61,329
AS6939Hurricane Electric LLCTransitIPv6209
AS6461Zayo BandwidthTransitIPv4 IPv6129
AS3303Swisscom (Schweiz) AGResidentialIPv4113
AS50673Serverius Holding B.V.UnclassifiedIPv4113
AS1103SURF B.V.UnclassifiedIPv4 IPv674
AS42708Glesys Sweden ABUnclassifiedIPv458
AS24482SG.GSHostingIPv619
AS401753BIXCE IncUnclassifiedIPv619

All 12 upstreams →

Transit

Downstream networks

All 26

Networks for which AS51088 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS202656Ivanov Vitaliy SergeevichUnclassifiedIPv4 IPv62,633
AS973Revive IT Solutions LLCUnclassifiedIPv4542
AS52102Tribion B.V.HostingIPv4 IPv6313
AS60131High5! B.V.UnclassifiedIPv4 IPv6272
AS15562Job SnijdersUnclassifiedIPv4 IPv6255
AS203919LUMADOCK LTDUnclassifiedIPv4240
AS210449SkyRENT B.V.UnclassifiedIPv4 IPv6182
AS35027SEVENP B.V.UnclassifiedIPv4180
AS12902Ekco B.V.UnclassifiedIPv4 IPv6143
AS24642Caveo Internet BVHostingIPv4 IPv6109

All 26 downstreams →

Adjacency

Adjacent networks

All 39

Every AS seen directly next to AS51088 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS8455atom86 BVHostingIPv4 IPv65,471
AS3257GTT Communications Inc.TransitIPv4 IPv63,020
AS202656Ivanov Vitaliy SergeevichUnclassifiedIPv4 IPv62,633
AS973Revive IT Solutions LLCUnclassifiedIPv4542
AS52102Tribion B.V.HostingIPv4 IPv6313
AS6939Hurricane Electric LLCTransitIPv6304
AS60131High5! B.V.UnclassifiedIPv4 IPv6281
AS15562Job SnijdersUnclassifiedIPv4 IPv6255
AS203919LUMADOCK LTDUnclassifiedIPv4240
AS50673Serverius Holding B.V.UnclassifiedIPv4 IPv6229

All 39 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.