asn.dev

Observed topology

AS205132 BTC-SEC-AS

Upstreams 2 carry this network
Downstreams 24 this network carries
Adjacent (IPv4) 26
Adjacent (IPv6) 0

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.

ASNetworkTypeFamiliesPaths seen
AS3223Voxility LLPHostingIPv4547
AS8866Vivacom Bulgaria EADResidentialIPv4120

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.

Transit

Downstream networks

inferred

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

ASNetworkTypeFamiliesPaths seen
AS12795Central Cooperative Bank JSCUnclassifiedIPv4112
AS35503Ministry of Education Youth and ScienceUnclassifiedIPv490
AS210754Kozloduy NPP PlcUnclassifiedIPv470
AS8795Vivacom Bulgaria EADUnclassifiedIPv462
AS60457Directorate General "Civil Aviation Administration"UnclassifiedIPv462
AS47771Vivacom Bulgaria EADUnclassifiedIPv462
AS44396United Bulgarian Bank ADUnclassifiedIPv461
AS3187Eurobank Bulgaria ADUnclassifiedIPv461
AS43651Generali Insurance ADUnclassifiedIPv455
AS41799Eurobank Bulgaria ADUnclassifiedIPv454
AS39163Econt Express OOD.UnclassifiedIPv453
AS197055ZAD Allianz Bulgaria ADUnclassifiedIPv448
AS199512Demax JSCUnclassifiedIPv442
AS48746Air Traffic Services AuthorityUnclassifiedIPv440
AS44201Bulgarian National BankUnclassifiedIPv440
AS213090Panda CooperationUnclassifiedIPv422
AS62037Transcard Financial Services EADUnclassifiedIPv418
AS210024ITA Engineering OODUnclassifiedIPv417
AS51383S Group International JSCUnclassifiedIPv413
AS35464Datamax JSCUnclassifiedIPv412
AS43202Elektrorazpredelenie Yug EADUnclassifiedIPv411
AS207826"INTERNATIONAL ASSET BANK AD"UnclassifiedIPv47
AS212533DP BULGARIAN SPORTS TOTALIZATORUnclassifiedIPv45
AS31140Bulgarian Stock Exchange ADUnclassifiedIPv43

Adjacency

Adjacent networks

26 shown

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

ASNetworkTypeFamiliesPaths seen
AS3223Voxility LLPHostingIPv4933
AS8866Vivacom Bulgaria EADResidentialIPv4754
AS12795Central Cooperative Bank JSCUnclassifiedIPv4112
AS35503Ministry of Education Youth and ScienceUnclassifiedIPv490
AS210754Kozloduy NPP PlcUnclassifiedIPv470
AS47771Vivacom Bulgaria EADUnclassifiedIPv462
AS60457Directorate General "Civil Aviation Administration"UnclassifiedIPv462
AS8795Vivacom Bulgaria EADUnclassifiedIPv462
AS3187Eurobank Bulgaria ADUnclassifiedIPv461
AS44396United Bulgarian Bank ADUnclassifiedIPv461
AS43651Generali Insurance ADUnclassifiedIPv455
AS41799Eurobank Bulgaria ADUnclassifiedIPv454
AS39163Econt Express OOD.UnclassifiedIPv453
AS197055ZAD Allianz Bulgaria ADUnclassifiedIPv448
AS199512Demax JSCUnclassifiedIPv442
AS44201Bulgarian National BankUnclassifiedIPv440
AS48746Air Traffic Services AuthorityUnclassifiedIPv440
AS213090Panda CooperationUnclassifiedIPv422
AS62037Transcard Financial Services EADUnclassifiedIPv418
AS210024ITA Engineering OODUnclassifiedIPv417
AS51383S Group International JSCUnclassifiedIPv413
AS35464Datamax JSCUnclassifiedIPv412
AS43202Elektrorazpredelenie Yug EADUnclassifiedIPv411
AS207826"INTERNATIONAL ASSET BANK AD"UnclassifiedIPv47
AS212533DP BULGARIAN SPORTS TOTALIZATORUnclassifiedIPv45
AS31140Bulgarian Stock Exchange ADUnclassifiedIPv43

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.

Interconnection

Exchange presence

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS205132, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it.

No exchange membership on file. That is not the same as peering nowhere: the dataset records what PCH has collected, and many exchanges publish no participant list at all.

Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.

Provenance

Where this comes from

Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.

Exchange presence comes from a separate dataset: the directory collected 2026-08-09 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,164 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.