asn.dev

Observed topology

AS57717 FBX-AS FiberXpress BV

Unclassified RIPE

Upstreams 14 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 22
Adjacent (IPv6) 9
Upstream graph Who carries AS57717, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS57717 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 14

Networks observed carrying traffic for AS57717: 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
AS33891Core-Backbone GmbHHostingIPv4 IPv6176
AS1299Arelion Sweden ABTransitIPv4 IPv6123
AS6939Hurricane Electric LLCTransitIPv4 IPv6120
AS174Cogent Communications, LLCTransitIPv466
AS3257GTT Communications Inc.TransitIPv436
AS5511Orange S.A.TransitIPv418
AS202425IP Volume incUnclassifiedIPv4 IPv613
AS1103SURF B.V.UnclassifiedIPv4 IPv611
AS24482SG.GSHostingIPv4 IPv611
AS20764CJSC RASCOMUnclassifiedIPv49

All 14 upstreams →

Transit

Downstream networks

inferred

Networks for which AS57717 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS62068SpectraIP B.V.HostingIPv4757
AS49870Alsycon B.V.HostingIPv4572
AS56611REBA Communications BVUnclassifiedIPv4 IPv6402
AS199834IP Solus IncUnclassifiedIPv4 IPv6273
AS48090TECHOFF SRV LIMITEDHostingIPv4183
AS204615IP Fiber IncUnclassifiedIPv462
AS202425IP Volume incUnclassifiedIPv4 IPv625

Adjacency

Adjacent networks

All 23

Every AS seen directly next to AS57717 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS33891Core-Backbone GmbHHostingIPv4 IPv61,485
AS62068SpectraIP B.V.HostingIPv4911
AS49870Alsycon B.V.HostingIPv4713
AS1299Arelion Sweden ABTransitIPv4 IPv6655
AS6939Hurricane Electric LLCTransitIPv4 IPv6503
AS56611REBA Communications BVUnclassifiedIPv4 IPv6402
AS199834IP Solus IncUnclassifiedIPv4 IPv6395
AS202425IP Volume incUnclassifiedIPv4 IPv6186
AS48090TECHOFF SRV LIMITEDHostingIPv4183
AS3257GTT Communications Inc.TransitIPv4140

All 23 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-12 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.36M 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.