asn.dev

Observed topology

AS39704 CJ2-AS CJ2 Hosting B.V.

Hosting RIPE Cable/DSL/ISP

Upstreams 26 carry this network
Downstreams 15 this network carries
Adjacent (IPv4) 39
Adjacent (IPv6) 19
Upstream graph Who carries AS39704, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS39704 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 26

Networks observed carrying traffic for AS39704: 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
AS174Cogent Communications, LLCTransitIPv4 IPv6336
AS6939Hurricane Electric LLCTransitIPv4 IPv6232
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4105
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv619
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv619
AS24482SG.GSHostingIPv4 IPv619
AS42708Glesys Sweden ABUnclassifiedIPv4 IPv619
AS48185team.blue NVUnclassifiedIPv4 IPv619
AS50300CustodianDC LimitedUnclassifiedIPv4 IPv619
AS204092Association GRIFONUnclassifiedIPv4 IPv619

All 26 upstreams →

Transit

Downstream networks

All 15

Networks for which AS39704 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS202315Onited Property B.V.UnclassifiedIPv4 IPv6304
AS198508Plusine Systems B.V.HostingIPv4 IPv6278
AS42152VCD Infra Solutions B.V.UnclassifiedIPv4118
AS48812Office IT B.V.UnclassifiedIPv4118
AS48501Init3 BVHostingIPv4 IPv695
AS215914NetGrid Holding B.V.UnclassifiedIPv482
AS41037Meta Micro Automatisering B.V.HostingIPv459
AS41038Mediacaster B.V.UnclassifiedIPv4 IPv655
AS210882Tim Zuidema trading as TiZuUnclassifiedIPv635
AS218128unnamedUnclassifiedIPv432

All 15 downstreams →

Adjacency

Adjacent networks

All 42

Every AS seen directly next to AS39704 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS174Cogent Communications, LLCTransitIPv4 IPv6739
AS6939Hurricane Electric LLCTransitIPv4 IPv6625
AS202315Onited Property B.V.UnclassifiedIPv4 IPv6304
AS198508Plusine Systems B.V.HostingIPv4 IPv6278
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4221
AS42152VCD Infra Solutions B.V.UnclassifiedIPv4118
AS48812Office IT B.V.UnclassifiedIPv4118
AS48501Init3 BVHostingIPv4 IPv695
AS215914NetGrid Holding B.V.UnclassifiedIPv482
AS41037Meta Micro Automatisering B.V.HostingIPv459

All 42 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

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. 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.

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