asn.dev

Observed topology

AS12306 PLUSLINE Plus.line AG

Hosting RIPE

Upstreams 23 carry this network
Downstreams 17 this network carries
Adjacent (IPv4) 38
Adjacent (IPv6) 25
Upstream graph Who carries AS12306, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS12306 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 23

Networks observed carrying traffic for AS12306: 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
AS33891Core-Backbone GmbHHostingIPv4 IPv6475
AS6939Hurricane Electric LLCTransitIPv4 IPv6168
AS3356Level 3 Parent, LLCTransitIPv4 IPv6124
AS1299Arelion Sweden ABTransitIPv4 IPv6117
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv668
AS2914NTT America, Inc.TransitIPv4 IPv652
AS3320Deutsche Telekom AGMobileIPv4 IPv646
AS213241TECHIT.BE SRLResidentialIPv4 IPv627
AS24482SG.GSHostingIPv4 IPv623
AS34019Hivane AssociationUnclassifiedIPv4 IPv623

All 23 upstreams →

Transit

Downstream networks

All 17

Networks for which AS12306 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS29515Hessische Zentrale fuer DatenverarbeitungUnclassifiedIPv4 IPv6438
AS12291DHL AGUnclassifiedIPv4300
AS57358IMT-Systems GmbHUnclassifiedIPv4 IPv6219
AS62434DFS Deutsche Flugsicherung GmbHUnclassifiedIPv4 IPv6210
AS47487Transgourmet Deutschland GmbH & Co. OHGUnclassifiedIPv4 IPv6189
AS209943InSyst GmbHUnclassifiedIPv4 IPv6155
AS16188punkt.de GmbHUnclassifiedIPv4 IPv6153
AS16205DSI GmbH Daten Service InformationssystemeUnclassifiedIPv4130
AS44152adesso as a service GmbHUnclassifiedIPv4117
AS204723HaCon Ingenieurgesellschaft mbHUnclassifiedIPv4 IPv693

All 17 downstreams →

Adjacency

Adjacent networks

All 40

Every AS seen directly next to AS12306 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS33891Core-Backbone GmbHHostingIPv4 IPv61,368
AS29515Hessische Zentrale fuer DatenverarbeitungUnclassifiedIPv4 IPv6438
AS6939Hurricane Electric LLCTransitIPv4 IPv6394
AS3356Level 3 Parent, LLCTransitIPv4 IPv6368
AS1299Arelion Sweden ABTransitIPv4 IPv6312
AS2914NTT America, Inc.TransitIPv4 IPv6303
AS12291DHL AGUnclassifiedIPv4300
AS57358IMT-Systems GmbHUnclassifiedIPv4 IPv6219
AS62434DFS Deutsche Flugsicherung GmbHUnclassifiedIPv4 IPv6210
AS47487Transgourmet Deutschland GmbH & Co. OHGUnclassifiedIPv4 IPv6189

All 40 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.