asn.dev

Observed topology

AS12958 MCC T2 Russia Network

Upstreams 11 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 0

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS12958: 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
AS12389PJSC RostelecomResidentialIPv4759
AS1299Arelion Sweden ABTransitIPv4190
AS20764CJSC RASCOMUnclassifiedIPv4114
AS9049JSC "ER-Telecom Holding"UnclassifiedIPv479
AS50673Serverius Holding B.V.UnclassifiedIPv463
AS50384iHome LLCUnclassifiedIPv434
AS37721Virtual Technologies & SolutionsResidentialIPv421
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv421
AS24482SG.GSHostingIPv421
AS49673Truenetwork LLCUnclassifiedIPv421
AS57463NetIX Communications JSCUnclassifiedIPv419

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 AS12958 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS34287T2 Mobile LLCUnclassifiedIPv4315

Adjacency

Adjacent networks

13 shown

Every AS seen directly next to AS12958 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS12389PJSC RostelecomResidentialIPv4759
AS34287T2 Mobile LLCUnclassifiedIPv4315
AS20764CJSC RASCOMUnclassifiedIPv4310
AS1299Arelion Sweden ABTransitIPv4240
AS9049JSC "ER-Telecom Holding"UnclassifiedIPv494
AS50673Serverius Holding B.V.UnclassifiedIPv478
AS50384iHome LLCUnclassifiedIPv439
AS49673Truenetwork LLCUnclassifiedIPv426
AS24482SG.GSHostingIPv426
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv426
AS37721Virtual Technologies & SolutionsResidentialIPv426
AS57463NetIX Communications JSCUnclassifiedIPv423
AS25478iHome LLCUnclassifiedIPv410

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 AS12958, 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 2026-08-09 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.03M 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.