asn.dev

Observed topology

AS39889 DCS-Networks-AS Fredrik Holmqvist

Hosting RIPE

Upstreams 19 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 33
Adjacent (IPv6) 24
Upstream graph Who carries AS39889, and who carries them, drawn as a map up to the transit-free core. 5 exchanges Where AS39889 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 19

Networks observed carrying traffic for AS39889: 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
AS50989SITAB InfrastrukturHostingIPv4 IPv6149
AS3399Obenet ABUnclassifiedIPv471
AS6939Hurricane Electric LLCTransitIPv416
AS3303Swisscom (Schweiz) AGResidentialIPv42
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv42
AS12779IT.Gate S.p.A.UnclassifiedIPv42
AS20485Joint Stock Company TransTeleComUnclassifiedIPv42
AS24482SG.GSHostingIPv42
AS34019Hivane AssociationUnclassifiedIPv42
AS34927iFog GmbHHostingIPv42

All 19 upstreams →

Transit

Downstream networks

inferred

Networks for which AS39889 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS30893No ACK Group Holding ABHostingIPv4 IPv6579
AS30880SpaceDump IT ABHostingIPv4 IPv6310
AS33837Fredrik HolmqvistUnclassifiedIPv4 IPv696
AS218973One Zero Group ABUnclassifiedIPv4 IPv667
AS205966Clearminds ABUnclassifiedIPv4 IPv666
AS48116Fredrik HolmqvistUnclassifiedIPv459
AS208686Nordic Servers ASUnclassifiedIPv459
AS50683Fredrik HolmqvistUnclassifiedIPv636

Adjacency

Adjacent networks

All 38

Every AS seen directly next to AS39889 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3399Obenet ABUnclassifiedIPv4 IPv61,422
AS30893No ACK Group Holding ABHostingIPv4 IPv61,371
AS30880SpaceDump IT ABHostingIPv4 IPv6413
AS6939Hurricane Electric LLCTransitIPv4 IPv6172
AS50989SITAB InfrastrukturHostingIPv4 IPv6149
AS33837Fredrik HolmqvistUnclassifiedIPv4 IPv696
AS213241TECHIT.BE SRLResidentialIPv4 IPv679
AS218973One Zero Group ABUnclassifiedIPv4 IPv667
AS205966Clearminds ABUnclassifiedIPv4 IPv666
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv664

All 38 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.