asn.dev

Observed topology

AS12329 TMR GLASFASER RUHR GmbH & Co. KG

Unclassified RIPE

Upstreams 29 carry this network
Downstreams 10 this network carries
Adjacent (IPv4) 38
Adjacent (IPv6) 18
Upstream graph Who carries AS12329, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS12329 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 29

Networks observed carrying traffic for AS12329: 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
AS50629LWLcom GmbHUnclassifiedIPv4 IPv6379
AS3320Deutsche Telekom AGMobileIPv4241
AS6939Hurricane Electric LLCTransitIPv4 IPv6143
AS34309Link11 GmbHUnclassifiedIPv4118
AS15763DOKOM Gesellschaft fuer Telekommunikation mbHResidentialIPv481
AS16024GELSEN-NET Kommunikationsgesellschaft mbHUnclassifiedIPv432
AS24482SG.GSHostingIPv4 IPv619
AS213241TECHIT.BE SRLResidentialIPv4 IPv619
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv418
AS4657StarHub LtdResidentialIPv418

All 29 upstreams →

Transit

Downstream networks

inferred

Networks for which AS12329 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203593TeleMark Telekommunikationsgesellschaft Mark mbHUnclassifiedIPv4 IPv6523
AS29484Ruhr-Universitaet BochumUnclassifiedIPv4 IPv6355
AS16024GELSEN-NET Kommunikationsgesellschaft mbHUnclassifiedIPv4 IPv6231
AS197990T&A SYSTEME GmbHUnclassifiedIPv4 IPv6197
AS15763DOKOM Gesellschaft fuer Telekommunikation mbHResidentialIPv4 IPv6174
AS31184Michael BussmannUnclassifiedIPv4 IPv6159
AS60522KomMITT-Ratingen GmbHUnclassifiedIPv4 IPv6126
AS207439Korves.Net USA LLCUnclassifiedIPv4 IPv6110
AS208527Wieland-Werke AGUnclassifiedIPv461
AS209405Westfalen Beteiligungen AktiengesellschaftUnclassifiedIPv460

Adjacency

Adjacent networks

All 40

Every AS seen directly next to AS12329 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS15763DOKOM Gesellschaft fuer Telekommunikation mbHResidentialIPv4 IPv61,194
AS6939Hurricane Electric LLCTransitIPv4 IPv6824
AS50629LWLcom GmbHUnclassifiedIPv4 IPv6709
AS203593TeleMark Telekommunikationsgesellschaft Mark mbHUnclassifiedIPv4 IPv6599
AS16024GELSEN-NET Kommunikationsgesellschaft mbHUnclassifiedIPv4 IPv6432
AS3320Deutsche Telekom AGMobileIPv4 IPv6406
AS29484Ruhr-Universitaet BochumUnclassifiedIPv4 IPv6355
AS197990T&A SYSTEME GmbHUnclassifiedIPv4 IPv6197
AS31184Michael BussmannUnclassifiedIPv4 IPv6159
AS34309Link11 GmbHUnclassifiedIPv4156

All 40 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.