asn.dev

Observed topology

AS553 BELWUE Universitaet Stuttgart

Unclassified RIPE Educational/Research

Upstreams 24 carry this network
Downstreams 16 this network carries
Adjacent (IPv4) 41
Adjacent (IPv6) 32
Upstream graph Who carries AS553, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS553 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 24

Networks observed carrying traffic for AS553: 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
AS1299Arelion Sweden ABTransitIPv4 IPv61,314
AS680Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.UnclassifiedIPv4 IPv61,202
AS2914NTT America, Inc.TransitIPv4 IPv6749
AS6939Hurricane Electric LLCTransitIPv4 IPv6624
AS3320Deutsche Telekom AGMobileIPv4 IPv6337
AS9002RETN LimitedUnclassifiedIPv4 IPv6313
AS33891Core-Backbone GmbHHostingIPv4117
AS1836green.ch AGResidentialIPv4 IPv6100
AS24482SG.GSHostingIPv4 IPv6100
AS34019Hivane AssociationUnclassifiedIPv4 IPv6100

All 24 upstreams →

Transit

Downstream networks

All 16

Networks for which AS553 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS5501Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.EducationIPv4 IPv61,573
AS60824Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.UnclassifiedIPv4 IPv61,168
AS42873Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.UnclassifiedIPv4 IPv6386
AS50964civillent GmbHUnclassifiedIPv4 IPv6326
AS34878Karlsruhe Institute of TechnologyEducationIPv4 IPv6193
AS213068Karlsruhe Institute of TechnologyUnclassifiedIPv4 IPv6152
AS204680Karlsruhe Institute of TechnologyUnclassifiedIPv4 IPv695
AS219090Temporaerhaus e.V.UnclassifiedIPv4 IPv693
AS202113plan b. solutions GmbHUnclassifiedIPv4 IPv667
AS212522ISP Service eGUnclassifiedIPv4 IPv667

All 16 downstreams →

Adjacency

Adjacent networks

All 44

Every AS seen directly next to AS553 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS1299Arelion Sweden ABTransitIPv4 IPv62,713
AS2914NTT America, Inc.TransitIPv4 IPv61,600
AS5501Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.EducationIPv4 IPv61,573
AS6939Hurricane Electric LLCTransitIPv4 IPv61,365
AS680Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.UnclassifiedIPv4 IPv61,220
AS60824Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.UnclassifiedIPv4 IPv61,168
AS204680Karlsruhe Institute of TechnologyUnclassifiedIPv4 IPv6705
AS3320Deutsche Telekom AGMobileIPv4 IPv6665
AS9002RETN LimitedUnclassifiedIPv4 IPv6510
AS34878Karlsruhe Institute of TechnologyEducationIPv4 IPv6387

All 44 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.