asn.dev

Observed topology

AS49581 FERDINANDZINK

Hosting Spamhaus ASN-DROP RIPE NSP

Upstreams 16 carry this network
Downstreams 95 this network carries
Adjacent (IPv4) 115
Adjacent (IPv6) 71
Upstream graph Who carries AS49581, and who carries them, drawn as a map up to the transit-free core. 7 exchanges Where AS49581 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 16

Networks observed carrying traffic for AS49581: 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
AS44592SkyLink Data Center BVHostingIPv4 IPv61,869
AS6939Hurricane Electric LLCTransitIPv4 IPv6164
AS3257GTT Communications Inc.TransitIPv4 IPv6144
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv480
AS62403PletX GmbHUnclassifiedIPv479
AS24482SG.GSHostingIPv4 IPv617
AS401753BIXCE IncUnclassifiedIPv4 IPv617
AS1103SURF B.V.UnclassifiedIPv4 IPv616
AS20766Association "Gitoyen"UnclassifiedIPv414
AS34927iFog GmbHHostingIPv414

All 16 upstreams →

Transit

Downstream networks

All 95

Networks for which AS49581 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS213915HOSTES LTDUnclassifiedIPv44,018
AS17404Pipe Networks LLCUnclassifiedIPv42,398
AS215439PLAY2GO INTERNATIONAL LIMITEDUnclassifiedIPv4 IPv61,791
AS51396Pfcloud UG (haftungsbeschrankt)HostingIPv4 IPv61,523
AS207513LLC "HOSTOFF CSL"UnclassifiedIPv4 IPv61,476
AS215365Tom GewieseUnclassifiedIPv4 IPv61,449
AS214716WEYRO LTDUnclassifiedIPv4 IPv61,334
AS209874Tech Tide Portugal Unipessoal LDAUnclassifiedIPv4 IPv6812
AS211066Simon MariacherUnclassifiedIPv4 IPv6708
AS200823MHost LLCUnclassifiedIPv4 IPv6577

All 95 downstreams →

Adjacency

Adjacent networks

All 125

Every AS seen directly next to AS49581 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS44592SkyLink Data Center BVHostingIPv4 IPv632,186
AS62403PletX GmbHUnclassifiedIPv4 IPv68,121
AS6939Hurricane Electric LLCTransitIPv4 IPv67,314
AS213915HOSTES LTDUnclassifiedIPv44,018
AS17404Pipe Networks LLCUnclassifiedIPv43,058
AS51396Pfcloud UG (haftungsbeschrankt)HostingIPv4 IPv63,049
AS3257GTT Communications Inc.TransitIPv4 IPv63,019
AS48014Albanian Hosting SH.P.K.HostingIPv4 IPv62,867
AS215439PLAY2GO INTERNATIONAL LIMITEDUnclassifiedIPv4 IPv62,631
AS214716WEYRO LTDUnclassifiedIPv4 IPv62,258

All 125 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.