asn.dev

Observed topology

AS43531 IXREACH BSO Network Solutions SAS

Unclassified RIPE

Upstreams 3 carry this network
Downstreams 48 this network carries
Adjacent (IPv4) 54
Adjacent (IPv6) 0
Upstream graph Who carries AS43531, and who carries them, drawn as a map up to the transit-free core. 7 exchanges Where AS43531 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS43531: 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
AS6939Hurricane Electric LLCTransitIPv422
AS37100SEACOM LimitedUnclassifiedIPv421
AS35280F5 Networks SARLHostingIPv42

Transit

Downstream networks

All 48

Networks for which AS43531 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS15623Cyberlink AGUnclassifiedIPv436
AS197816Etix Everywhere Ouest SASUnclassifiedIPv421
AS212633EE Mobile Telecom LtdUnclassifiedIPv49
AS25582NWIP LtdUnclassifiedIPv48
AS209336GB Wholesale Networks LTDUnclassifiedIPv48
AS205019G1SAT B.V.UnclassifiedIPv47
AS205091EuroNet Internet LtdUnclassifiedIPv46
AS212228servinga GmbHUnclassifiedIPv46
AS43424SQUARK SARLUnclassifiedIPv45
AS210232PACTOO SASResidentialIPv45

All 48 downstreams →

Adjacency

Adjacent networks

All 54

Every AS seen directly next to AS43531 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS37100SEACOM LimitedUnclassifiedIPv4245
AS3216PJSC "Vimpelcom"MobileIPv454
AS15623Cyberlink AGUnclassifiedIPv454
AS214073Heart Internet limitedUnclassifiedIPv449
AS197816Etix Everywhere Ouest SASUnclassifiedIPv432
AS6939Hurricane Electric LLCTransitIPv422
AS205402Intercity Technology LtdUnclassifiedIPv419
AS212633EE Mobile Telecom LtdUnclassifiedIPv49
AS25582NWIP LtdUnclassifiedIPv48
AS209336GB Wholesale Networks LTDUnclassifiedIPv48

All 54 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.