asn.dev

Observed topology

AS39351 ESAB-AS 31173 Services AB

VPN RIPE NSP

Upstreams 37 carry this network
Downstreams 20 this network carries
Adjacent (IPv4) 58
Adjacent (IPv6) 46
Upstream graph Who carries AS39351, and who carries them, drawn as a map up to the transit-free core. 17 exchanges Where AS39351 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 37

Networks observed carrying traffic for AS39351: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6834
AS174Cogent Communications, LLCTransitIPv4833
AS6939Hurricane Electric LLCTransitIPv4 IPv6392
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6143
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6124
AS58057Securebit AGUnclassifiedIPv4 IPv681
AS1836green.ch AGResidentialIPv4 IPv661
AS3320Deutsche Telekom AGMobileIPv4 IPv661
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv661
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv661

All 37 upstreams →

Transit

Downstream networks

All 20

Networks for which AS39351 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS39287Materialism s.r.l.HostingIPv4 IPv6634
AS199656ZynerUnclassifiedIPv4 IPv6159
AS214365Hypefox ABHostingIPv4 IPv6153
AS61282BrainMill ABResidentialIPv4 IPv6132
AS51519Karabro ABUnclassifiedIPv4 IPv6121
AS43969Prinode ABUnclassifiedIPv4120
AS204538Kareby Hosting ABHostingIPv4 IPv6102
AS39910Famco ABUnclassifiedIPv4 IPv693
AS197854Eisenia ABUnclassifiedIPv4 IPv693
AS216025Mullvad VPN ABVPNIPv4 IPv693

All 20 downstreams →

Adjacency

Adjacent networks

All 67

Every AS seen directly next to AS39351 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv61,529
AS174Cogent Communications, LLCTransitIPv4 IPv61,071
AS41051Openfactory GmbHUnclassifiedIPv4 IPv6994
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6743
AS6939Hurricane Electric LLCTransitIPv4 IPv6715
AS39287Materialism s.r.l.HostingIPv4 IPv6663
AS51519Karabro ABUnclassifiedIPv4 IPv6367
AS199656ZynerUnclassifiedIPv4 IPv6338
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6303
AS213241TECHIT.BE SRLResidentialIPv4 IPv6274

All 67 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M 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.