asn.dev

Observed topology

AS12578 APOLLO-AS SIA Tet

Residential RIPE

Upstreams 33 carry this network
Downstreams 94 this network carries
Adjacent (IPv4) 128
Adjacent (IPv6) 39
Upstream graph Who carries AS12578, and who carries them, drawn as a map up to the transit-free core. 9 exchanges Where AS12578 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 33

Networks observed carrying traffic for AS12578: 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 IPv6804
AS1299Arelion Sweden ABTransitIPv4 IPv6683
AS6939Hurricane Electric LLCTransitIPv4 IPv6416
AS174Cogent Communications, LLCTransitIPv4 IPv6330
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6169
AS33891Core-Backbone GmbHHostingIPv460
AS1836green.ch AGResidentialIPv4 IPv657
AS24482SG.GSHostingIPv4 IPv657
AS34019Hivane AssociationUnclassifiedIPv4 IPv657
AS37721Virtual Technologies & SolutionsResidentialIPv4 IPv657

All 33 upstreams →

Transit

Downstream networks

All 94

Networks for which AS12578 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS213934IPV1 SIAUnclassifiedIPv4829
AS34073LR Izglitibas un zinatnes ministrijaUnclassifiedIPv4 IPv6496
AS24645CSC Telecom, UABResidentialIPv4438
AS43513Sia Nano ITUnclassifiedIPv4356
AS34326CSC Telecom SIAUnclassifiedIPv4295
AS12525INTERNET Ltd.UnclassifiedIPv4 IPv6272
AS8285SIAHostingIPv4 IPv6254
AS43188Lauku atbalsta dienestsUnclassifiedIPv4240
AS6769Kertinis valstybes telekomunikaciju centrasUnclassifiedIPv4 IPv6211
AS197870S.I.A."IBANPAY"UnclassifiedIPv4178

All 94 downstreams →

Adjacency

Adjacent networks

All 133

Every AS seen directly next to AS12578 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv4 IPv63,792
AS1299Arelion Sweden ABTransitIPv4 IPv62,421
AS34073LR Izglitibas un zinatnes ministrijaUnclassifiedIPv4 IPv61,789
AS8285SIAHostingIPv4 IPv61,623
AS174Cogent Communications, LLCTransitIPv4 IPv61,605
AS6939Hurricane Electric LLCTransitIPv4 IPv61,412
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv61,061
AS58269CloudHosting SIAUnclassifiedIPv41,046
AS213934IPV1 SIAUnclassifiedIPv4829
AS24645CSC Telecom, UABResidentialIPv4465

All 133 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.