asn.dev

Observed topology

AS54048 CVIN

Upstreams 3 carry this network
Downstreams 20 this network carries
Adjacent (IPv4) 23
Adjacent (IPv6) 0

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS54048: 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 LLCTransitIPv4295
AS1299Arelion Sweden ABTransitIPv4138
AS2152CENICUnclassifiedIPv4116

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 AS54048 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS18632Volcano Vision, Inc.UnclassifiedIPv42,919
AS15121Calaveras Internet CompanyUnclassifiedIPv4748
AS26421Ponderosa CablevisionUnclassifiedIPv4615
AS30263Cal-Ore Telephone Co.UnclassifiedIPv4295
AS396513County of FresnoUnclassifiedIPv4272
AS46867SebastianUnclassifiedIPv4220
AS14750Sierra Tel InternetUnclassifiedIPv4204
AS395188US FOODS, INC.UnclassifiedIPv4103
AS26176AJA Video Systems, Inc.UnclassifiedIPv492
AS399033VARCOMM BROADBAND, INC.UnclassifiedIPv474
AS986Kingsburg Media FoundationUnclassifiedIPv468
AS393661County of NevadaUnclassifiedIPv468
AS62932VUSDUnclassifiedIPv468
AS394121Valley Children's HospitalUnclassifiedIPv444
AS396262Fresno County Sheriff's OfficeUnclassifiedIPv444
AS32635City of ClovisUnclassifiedIPv441
AS398440CITY OF VISALIAUnclassifiedIPv441
AS62581Wonderful Pistachios & Almonds LLCUnclassifiedIPv439
AS46276SmarterBroadbandResidentialIPv418
AS40523OACYS TECHNOLOGYUnclassifiedIPv412

Adjacency

Adjacent networks

23 shown

Every AS seen directly next to AS54048 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv45,217
AS18632Volcano Vision, Inc.UnclassifiedIPv43,001
AS2152CENICUnclassifiedIPv41,274
AS15121Calaveras Internet CompanyUnclassifiedIPv4748
AS26421Ponderosa CablevisionUnclassifiedIPv4615
AS30263Cal-Ore Telephone Co.UnclassifiedIPv4302
AS396513County of FresnoUnclassifiedIPv4272
AS46867SebastianUnclassifiedIPv4220
AS14750Sierra Tel InternetUnclassifiedIPv4204
AS1299Arelion Sweden ABTransitIPv4138
AS395188US FOODS, INC.UnclassifiedIPv4103
AS26176AJA Video Systems, Inc.UnclassifiedIPv492
AS399033VARCOMM BROADBAND, INC.UnclassifiedIPv474
AS393661County of NevadaUnclassifiedIPv468
AS986Kingsburg Media FoundationUnclassifiedIPv468
AS62932VUSDUnclassifiedIPv468
AS396262Fresno County Sheriff's OfficeUnclassifiedIPv444
AS394121Valley Children's HospitalUnclassifiedIPv444
AS32635City of ClovisUnclassifiedIPv441
AS398440CITY OF VISALIAUnclassifiedIPv441
AS62581Wonderful Pistachios & Almonds LLCUnclassifiedIPv439
AS40523OACYS TECHNOLOGYUnclassifiedIPv418
AS46276SmarterBroadbandResidentialIPv418

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 AS54048, 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.