asn.dev

Observed topology

AS51178 AVANTEL-SPB-AS St.Petersburg branch

Unclassified RIPE

Upstreams 19 carry this network
Downstreams 14 this network carries
Adjacent (IPv4) 33
Adjacent (IPv6) 9
Upstream graph Who carries AS51178, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS51178 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 19

Networks observed carrying traffic for AS51178: 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
AS20485Joint Stock Company TransTeleComUnclassifiedIPv4 IPv6216
AS1299Arelion Sweden ABTransitIPv4 IPv6125
AS201706SERVICEPIPE LLCUnclassifiedIPv4101
AS59692IQWeb FZ-LLCUnclassifiedIPv481
AS29076Citytelecom LLCHostingIPv4 IPv670
AS50509Transroute Telecom LTDUnclassifiedIPv4 IPv648
AS57304JSC "RetnNet"UnclassifiedIPv4 IPv637
AS9049JSC "ER-Telecom Holding"UnclassifiedIPv4 IPv628
AS50673Serverius Holding B.V.UnclassifiedIPv418
AS9002RETN LimitedUnclassifiedIPv411

All 19 upstreams →

Transit

Downstream networks

All 14

Networks for which AS51178 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS204891LLC Crystal Service IntegrationUnclassifiedIPv485
AS59399FAI Russian Maritime Register of ShippingUnclassifiedIPv470
AS202537Feniks JSCUnclassifiedIPv447
AS204272ASARTA LLCUnclassifiedIPv4 IPv647
AS210787CDEK-Global LLCUnclassifiedIPv437
AS202082LLC ILOTUnclassifiedIPv435
AS197303OCS Group LimitedUnclassifiedIPv430
AS199072"Center of Computor Research" JSCUnclassifiedIPv4 IPv628
AS62330ASH LtdUnclassifiedIPv425
AS203597STEK LLCUnclassifiedIPv4 IPv625

All 14 downstreams →

Adjacency

Adjacent networks

All 33

Every AS seen directly next to AS51178 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS20485Joint Stock Company TransTeleComUnclassifiedIPv4 IPv6305
AS59692IQWeb FZ-LLCUnclassifiedIPv4268
AS1299Arelion Sweden ABTransitIPv4 IPv6175
AS29076Citytelecom LLCHostingIPv4 IPv6135
AS201706SERVICEPIPE LLCUnclassifiedIPv4101
AS204891LLC Crystal Service IntegrationUnclassifiedIPv485
AS50509Transroute Telecom LTDUnclassifiedIPv4 IPv682
AS59399FAI Russian Maritime Register of ShippingUnclassifiedIPv470
AS57304JSC "RetnNet"UnclassifiedIPv4 IPv648
AS202537Feniks JSCUnclassifiedIPv447

All 33 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-23 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.15M 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.