asn.dev

Observed topology

AS57866 FUSIX-AS

Unclassified RIPE

Upstreams 15 carry this network
Downstreams 155 this network carries
Adjacent (IPv4) 157
Adjacent (IPv6) 66
Upstream graph Who carries AS57866, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS57866 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 15

Networks observed carrying traffic for AS57866: 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 IPv6317
AS2914NTT America, Inc.TransitIPv4 IPv6178
AS3356Level 3 Parent, LLCTransitIPv4 IPv6148
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6133
AS9002RETN LimitedUnclassifiedIPv4 IPv683
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv676
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv455
AS24482SG.GSHostingIPv4 IPv621
AS5511Orange S.A.TransitIPv4 IPv620
AS34927iFog GmbHHostingIPv416

All 15 upstreams →

Transit

Downstream networks

All 155

Networks for which AS57866 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS2914NTT America, Inc.TransitIPv41,645
AS13335Cloudflare, Inc.HostingIPv41,628
AS14445PeaceWebUnclassifiedIPv4 IPv61,202
AS8075Microsoft CorporationHostingIPv41,195
AS15169Google LLCHostingIPv4959
AS3356Level 3 Parent, LLCTransitIPv4910
AS5511Orange S.A.TransitIPv4726
AS15695Expereo International BVUnclassifiedIPv4 IPv6692
AS16276OVH SASHostingIPv4688
AS58075X2com BVResidentialIPv4 IPv6678

All 155 downstreams →

Adjacency

Adjacent networks

All 161

Every AS seen directly next to AS57866 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6323,381
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4 IPv6226,367
AS5511Orange S.A.TransitIPv4 IPv6134,572
AS3356Level 3 Parent, LLCTransitIPv4 IPv6120,600
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv675,998
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv671,845
AS2914NTT America, Inc.TransitIPv4 IPv661,543
AS9002RETN LimitedUnclassifiedIPv4 IPv632,415
AS13335Cloudflare, Inc.HostingIPv48,032
AS28917Fiord Networks, UABUnclassifiedIPv46,069

All 161 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-23 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.15M 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.