asn.dev

Observed topology

AS25581 GMG

Hosting RIPE Network Services

Upstreams 11 carry this network
Downstreams 0 this network carries
Adjacent (IPv4) 10
Adjacent (IPv6) 8
Upstream graph Who carries AS25581, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS25581 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 11

Networks observed carrying traffic for AS25581: 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
AS6461Zayo BandwidthTransitIPv4 IPv686
AS12387TON Total optical Networks AGUnclassifiedIPv4 IPv686
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv677
AS8218Zayo Infrastructure France SAUnclassifiedIPv4 IPv644
AS6939Hurricane Electric LLCTransitIPv435
AS58115SwissIX Internet ExchangeUnclassifiedIPv432
AS49432Dominic Schallert trading as schallert.com e.U.UnclassifiedIPv4 IPv68
AS24482SG.GSHostingIPv4 IPv66
AS34019Hivane AssociationUnclassifiedIPv4 IPv66
AS1836green.ch AGResidentialIPv45

All 11 upstreams →

Transit

Downstream networks

inferred

Networks for which AS25581 was observed as the last hop before the origin, meaning it appears to provide them transit.

No downstream observed. This network does not appear to carry transit for anyone.

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS25581 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6461Zayo BandwidthTransitIPv4 IPv686
AS12387TON Total optical Networks AGUnclassifiedIPv4 IPv686
AS3303Swisscom (Schweiz) AGResidentialIPv4 IPv677
AS8218Zayo Infrastructure France SAUnclassifiedIPv4 IPv644
AS6939Hurricane Electric LLCTransitIPv435
AS58115SwissIX Internet ExchangeUnclassifiedIPv432
AS49432Dominic Schallert trading as schallert.com e.U.UnclassifiedIPv4 IPv68
AS24482SG.GSHostingIPv4 IPv66
AS34019Hivane AssociationUnclassifiedIPv4 IPv66
AS1836green.ch AGResidentialIPv45

All 11 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-30 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.49M 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.