Observed topology

AS205132 BTC-SEC-AS

Unclassified RIPE

Upstreams 2 carry this network

Downstreams 23 this network carries

Adjacent (IPv4) 25

Adjacent (IPv6) 0

Upstream graph Who carries AS205132, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS205132 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS205132: 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.

AS	Network	Type	Families	Paths seen
AS3223	Voxility LLP	Hosting	IPv4	536
AS8866	Vivacom Bulgaria EAD	Residential	IPv4	113

Transit

Downstream networks

All 23

Networks for which AS205132 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS12795	Central Cooperative Bank JSC	Unclassified	IPv4	110
AS35503	Ministry of Education Youth and Science	Unclassified	IPv4	85
AS210754	Kozloduy NPP Plc	Unclassified	IPv4	68
AS47771	Vivacom Bulgaria EAD	Unclassified	IPv4	61
AS60457	Directorate General "Civil Aviation Administration"	Unclassified	IPv4	61
AS8795	Vivacom Bulgaria EAD	Unclassified	IPv4	60
AS3187	Eurobank Bulgaria AD	Unclassified	IPv4	58
AS41799	Eurobank Bulgaria AD	Unclassified	IPv4	54
AS43651	Generali Insurance AD	Unclassified	IPv4	54
AS39163	Econt Express OOD.	Unclassified	IPv4	51

All 23 downstreams →

Adjacency

Adjacent networks

All 25

Every AS seen directly next to AS205132 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS3223	Voxility LLP	Hosting	IPv4	854
AS8866	Vivacom Bulgaria EAD	Residential	IPv4	733
AS12795	Central Cooperative Bank JSC	Unclassified	IPv4	110
AS35503	Ministry of Education Youth and Science	Unclassified	IPv4	85
AS210754	Kozloduy NPP Plc	Unclassified	IPv4	68
AS47771	Vivacom Bulgaria EAD	Unclassified	IPv4	61
AS60457	Directorate General "Civil Aviation Administration"	Unclassified	IPv4	61
AS8795	Vivacom Bulgaria EAD	Unclassified	IPv4	60
AS3187	Eurobank Bulgaria AD	Unclassified	IPv4	58
AS41799	Eurobank Bulgaria AD	Unclassified	IPv4	54

All 25 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-20 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.16M 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.