asn.dev

Observed topology

AS41230 ASK4

Upstreams 21 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 27
Adjacent (IPv6) 9

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS41230: 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
AS1299Arelion Sweden ABTransitIPv4 IPv6448
AS2914NTT America, Inc.TransitIPv4 IPv6258
AS6939Hurricane Electric LLCTransitIPv4 IPv6228
AS33891Core-Backbone GmbHHostingIPv428
AS34549meerfarbig GmbH & Co. KGHostingIPv424
AS24482SG.GSHostingIPv4 IPv621
AS50304Blix Solutions ASUnclassifiedIPv412
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv612
AS48185team.blue NVUnclassifiedIPv4 IPv612
AS57463NetIX Communications JSCUnclassifiedIPv48
AS6461Zayo BandwidthTransitIPv48
AS12779IT.Gate S.p.A.UnclassifiedIPv46
AS12552GlobalConnect ABUnclassifiedIPv46
AS17639Converge ICT Solutions Inc.UnclassifiedIPv46
AS3216PJSC "Vimpelcom"MobileIPv46
AS37721Virtual Technologies & SolutionsResidentialIPv46
AS48362Stadtwerke FeldkirchResidentialIPv46
AS3303Swisscom (Schweiz) AGResidentialIPv46
AS37100SEACOM LimitedUnclassifiedIPv46
AS3741Dimension DataUnclassifiedIPv46
AS20562Broadband Hosting B.V.HostingIPv42

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 AS41230 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS30933KDA WEB SERVICES LTDHostingIPv4366
AS8916Portfast LtdHostingIPv4 IPv6116
AS206049Communicate Technology LTDUnclassifiedIPv4 IPv6111
AS21396NetConnex Broadband Ltd.HostingIPv4 IPv692

Adjacency

Adjacent networks

36 shown

Every AS seen directly next to AS41230 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv6711
AS2914NTT America, Inc.TransitIPv4 IPv6371
AS30933KDA WEB SERVICES LTDHostingIPv4366
AS6939Hurricane Electric LLCTransitIPv4 IPv6318
AS8916Portfast LtdHostingIPv4 IPv6280
AS206049Communicate Technology LTDUnclassifiedIPv4 IPv6238
AS34549meerfarbig GmbH & Co. KGHostingIPv4120
AS21396NetConnex Broadband Ltd.HostingIPv4 IPv692
AS50304Blix Solutions ASUnclassifiedIPv476
AS24482SG.GSHostingIPv4 IPv662
AS33891Core-Backbone GmbHHostingIPv440
AS57463NetIX Communications JSCUnclassifiedIPv440
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv639
AS37721Virtual Technologies & SolutionsResidentialIPv438
AS48362Stadtwerke FeldkirchResidentialIPv436
AS48185team.blue NVUnclassifiedIPv4 IPv636
AS37100SEACOM LimitedUnclassifiedIPv430
AS12552GlobalConnect ABUnclassifiedIPv430
AS3741Dimension DataUnclassifiedIPv430
AS17639Converge ICT Solutions Inc.UnclassifiedIPv428
AS12779IT.Gate S.p.A.UnclassifiedIPv418
AS3303Swisscom (Schweiz) AGResidentialIPv418
AS29075IELO-LIAZO SERVICES SASUnclassifiedIPv416
AS4637Telstra GlobalUnclassifiedIPv412
AS3216PJSC "Vimpelcom"MobileIPv412
AS6461Zayo BandwidthTransitIPv48
AS20562Broadband Hosting B.V.HostingIPv42

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 AS41230, 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 6 exchanges across 2 countries and 1 region.

ExchangeLocationTheir addressMember ports
LINX LON1London, United Kingdom195.66.224.104925
London Network Access PointLondon, United Kingdom5.57.80.184316
LINX ManchesterManchester, United Kingdom195.66.244.23145
Megaport Frankfurt IXFrankfurt, Germany62.69.146.122114
Megaport Dusseldorf IXDüsseldorf, Germany194.146.118.15298
Leeds Internet ExchangeLeeds, United Kingdom91.217.231.1922

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.