asn.dev

Observed topology

AS25374 ESCOMBG-AS Local Internet Service Provider Bulgaria

Upstreams 20 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 18
Adjacent (IPv6) 11

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS25374: 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 LLCTransitIPv4 IPv65,206
AS57463NetIX Communications JSCUnclassifiedIPv4 IPv61,020
AS1299Arelion Sweden ABTransitIPv4 IPv6879
AS174Cogent Communications, LLCTransitIPv4 IPv6583
AS3356Level 3 Parent, LLCTransitIPv4 IPv6448
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6436
AS58057Securebit AGUnclassifiedIPv4 IPv6291
AS9002RETN LimitedUnclassifiedIPv4147
AS24482SG.GSHostingIPv4 IPv6146
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4145
AS37721Virtual Technologies & SolutionsResidentialIPv4145
AS206499LOCIX LIMITEDUnclassifiedIPv4145
AS8280SYNAPSECOM S.A. Provider of Telecommunications and Internet ServicesHostingIPv4145
AS3303Swisscom (Schweiz) AGResidentialIPv4145
AS57344Telehouse EADResidentialIPv66
AS34019Hivane AssociationUnclassifiedIPv41
AS34927iFog GmbHHostingIPv41
AS20764CJSC RASCOMUnclassifiedIPv41
AS205794JINZE YANGUnclassifiedIPv61
AS56662Marcin GondekUnclassifiedIPv61

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 AS25374 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS204554PRESTIGE-AB LtdUnclassifiedIPv466

Adjacency

Adjacent networks

29 shown

Every AS seen directly next to AS25374 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv65,272
AS57463NetIX Communications JSCUnclassifiedIPv4 IPv61,020
AS1299Arelion Sweden ABTransitIPv4 IPv6879
AS174Cogent Communications, LLCTransitIPv4 IPv6583
AS3356Level 3 Parent, LLCTransitIPv4 IPv6448
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6436
AS58057Securebit AGUnclassifiedIPv4 IPv6291
AS9002RETN LimitedUnclassifiedIPv4147
AS24482SG.GSHostingIPv4 IPv6146
AS8280SYNAPSECOM S.A. Provider of Telecommunications and Internet ServicesHostingIPv4145
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4145
AS206499LOCIX LIMITEDUnclassifiedIPv4145
AS3303Swisscom (Schweiz) AGResidentialIPv4145
AS37721Virtual Technologies & SolutionsResidentialIPv4145
AS204554PRESTIGE-AB LtdUnclassifiedIPv466
AS57344Telehouse EADResidentialIPv66
AS56662Marcin GondekUnclassifiedIPv61
AS34019Hivane AssociationUnclassifiedIPv41
AS205794JINZE YANGUnclassifiedIPv61
AS34927iFog GmbHHostingIPv41
AS20764CJSC RASCOMUnclassifiedIPv41

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 AS25374, 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. Recorded at 2 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
NetIXSofia, Bulgaria185.1.226.41264
Bulgarian Internet eXchangeSofia, Bulgaria193.169.198.225137

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 2026-08-08 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,137 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.