asn.dev

Observed topology

AS15372 IBH-AS IBH connect GmbH

Unclassified RIPE NSP

Upstreams 9 carry this network
Downstreams 4 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 7
Upstream graph Who carries AS15372, and who carries them, drawn as a map up to the transit-free core. 3 exchanges Where AS15372 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS15372: 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
AS9136Wobcom GmbHResidentialIPv4 IPv6181
AS21413Envia Tel GmbHResidentialIPv4 IPv6175
AS13237euNetworks GmbHUnclassifiedIPv4 IPv6108
AS3320Deutsche Telekom AGMobileIPv4 IPv667
AS6939Hurricane Electric LLCTransitIPv464
AS174Cogent Communications, LLCTransitIPv4 IPv626
AS24482SG.GSHostingIPv4 IPv611
AS6797GlobalConnect ABUnclassifiedIPv49
AS8218Zayo Infrastructure France SAUnclassifiedIPv49

Transit

Downstream networks

inferred

Networks for which AS15372 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS203592CLOUD & HEAT Technologies GmbHUnclassifiedIPv4 IPv693
AS11528Photronics Inc.UnclassifiedIPv461
AS215556Dresden-IT GmbHUnclassifiedIPv443
AS208508Landeshauptstadt Dresden, EB IT Dienstleistungen DresdenUnclassifiedIPv430

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS15372 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS21413Envia Tel GmbHResidentialIPv4 IPv6250
AS9136Wobcom GmbHResidentialIPv4 IPv6244
AS13237euNetworks GmbHUnclassifiedIPv4 IPv6142
AS203592CLOUD & HEAT Technologies GmbHUnclassifiedIPv4 IPv693
AS3320Deutsche Telekom AGMobileIPv4 IPv692
AS6939Hurricane Electric LLCTransitIPv478
AS11528Photronics Inc.UnclassifiedIPv461
AS215556Dresden-IT GmbHUnclassifiedIPv443
AS174Cogent Communications, LLCTransitIPv4 IPv638
AS208508Landeshauptstadt Dresden, EB IT Dienstleistungen DresdenUnclassifiedIPv430

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.46M 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.