asn.dev

Observed topology

AS12732 GUTCON-NET GutCon GmbH

Unclassified RIPE NSP

Upstreams 21 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 27
Adjacent (IPv6) 24
Upstream graph Who carries AS12732, and who carries them, drawn as a map up to the transit-free core. 5 exchanges Where AS12732 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 21

Networks observed carrying traffic for AS12732: 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
AS30742Bremen Briteline GmbHUnclassifiedIPv4 IPv6201
AS3356Level 3 Parent, LLCTransitIPv4 IPv6154
AS174Cogent Communications, LLCTransitIPv4 IPv670
AS5405Inter.link GmbHUnclassifiedIPv4 IPv663
AS6939Hurricane Electric LLCTransitIPv4 IPv642
AS34549meerfarbig GmbH & Co. KGHostingIPv46
AS24482SG.GSHostingIPv4 IPv65
AS9002RETN LimitedUnclassifiedIPv63
AS6797GlobalConnect ABUnclassifiedIPv42
AS8551Bezeq International Ltd.UnclassifiedIPv42

All 21 upstreams →

Transit

Downstream networks

inferred

Networks for which AS12732 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS8875sinma GmbHHostingIPv4 IPv6918
AS44716D-hosting die Rackspace & Connectivity GmbHHostingIPv4535
AS15657Speedbone Internet & Connectivity GmbHHostingIPv4 IPv6332
AS203965FRITZ! Technology GmbHUnclassifiedIPv4 IPv6192
AS25516init AG fuer digitale KommunikationHostingIPv4 IPv6105
AS39614Dawico Deutschland GmbHUnclassifiedIPv4 IPv648
AS201257Johannes BehrndtUnclassifiedIPv632

Adjacency

Adjacent networks

All 31

Every AS seen directly next to AS12732 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS8875sinma GmbHHostingIPv4 IPv6918
AS3356Level 3 Parent, LLCTransitIPv4 IPv6785
AS5405Inter.link GmbHUnclassifiedIPv4 IPv6666
AS44716D-hosting die Rackspace & Connectivity GmbHHostingIPv4535
AS174Cogent Communications, LLCTransitIPv4 IPv6399
AS15657Speedbone Internet & Connectivity GmbHHostingIPv4 IPv6347
AS6939Hurricane Electric LLCTransitIPv4 IPv6330
AS30742Bremen Briteline GmbHUnclassifiedIPv4 IPv6201
AS203965FRITZ! Technology GmbHUnclassifiedIPv4 IPv6192
AS25516init AG fuer digitale KommunikationHostingIPv4 IPv6105

All 31 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.