asn.dev

Observed topology

AS205941 STEFAN

Unclassified RIPE

Upstreams 31 carry this network
Downstreams 23 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 48
Upstream graph Who carries AS205941, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS205941 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 31

Networks observed carrying traffic for AS205941: 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
AS214757Jakub KrsaUnclassifiedIPv4 IPv688
AS11967Hop179 OUUnclassifiedIPv4 IPv681
AS6939Hurricane Electric LLCTransitIPv4 IPv674
AS214762Sebastian Stefanek trading as MatHost.euHostingIPv672
AS6204INTERKVM HOST SRLUnclassifiedIPv4 IPv666
AS49600NEAR IP, S.L.HostingIPv4 IPv651
AS215362Promo Plus SRLUnclassifiedIPv638
AS60900Adrian Trifonov trading as Ssmidge TechnologiesUnclassifiedIPv634
AS216456Dcent Investments BVUnclassifiedIPv4 IPv619
AS215030Budankailu Namrata Patra trading as AspireHostingUnclassifiedIPv412

All 31 upstreams →

Transit

Downstream networks

All 23

Networks for which AS205941 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS197806Andrei RysUnclassifiedIPv4 IPv6284
AS204464NextServ LLCUnclassifiedIPv6111
AS208824Pau CabUnclassifiedIPv4 IPv697
AS213975Warwick Ward-CoxUnclassifiedIPv444
AS203868Rifqi Arief PamungkasUnclassifiedIPv641
AS218569Viktor NesmeianovUnclassifiedIPv4 IPv641
AS17290AUSTIN-HADLEYUnclassifiedIPv439
AS199518Gregory ShapiroUnclassifiedIPv638
AS202934SINCITY HOSTING LLCHostingIPv638
AS205305Gabriel PeronUnclassifiedIPv638

All 23 downstreams →

Adjacency

Adjacent networks

All 55

Every AS seen directly next to AS205941 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6204INTERKVM HOST SRLUnclassifiedIPv4 IPv6395
AS214757Jakub KrsaUnclassifiedIPv4 IPv6322
AS197806Andrei RysUnclassifiedIPv4 IPv6284
AS6939Hurricane Electric LLCTransitIPv4 IPv6239
AS210464ANDREW KRISTULIResidentialIPv4 IPv6200
AS216456Dcent Investments BVUnclassifiedIPv4 IPv6137
AS214762Sebastian Stefanek trading as MatHost.euHostingIPv6130
AS204464NextServ LLCUnclassifiedIPv6111
AS215114Stevan Durand--L'Hours t/a SLBCLOUDUnclassifiedIPv4 IPv699
AS208824Pau CabUnclassifiedIPv4 IPv697

All 55 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.