asn.dev

Observed topology

AS51531 DECIX-MGMT-AS DE-CIX Management GmbH

Unclassified RIPE Enterprise

Upstreams 20 carry this network
Downstreams 2 this network carries
Adjacent (IPv4) 19
Adjacent (IPv6) 15
Upstream graph Who carries AS51531, and who carries them, drawn as a map up to the transit-free core. 16 exchanges Where AS51531 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 20

Networks observed carrying traffic for AS51531: 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
AS6939Hurricane Electric LLCTransitIPv4 IPv6297
AS1299Arelion Sweden ABTransitIPv4 IPv668
AS33891Core-Backbone GmbHHostingIPv4 IPv659
AS13101TNG Stadtnetz GmbHResidentialIPv4 IPv637
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv625
AS22652Videotron LteeResidentialIPv4 IPv618
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv611
AS24482SG.GSHostingIPv4 IPv611
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv611
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4 IPv611

All 20 upstreams →

Transit

Downstream networks

inferred

Networks for which AS51531 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS715WoodyNet, Inc.UnclassifiedIPv4130
AS196610DE-CIX Management GmbHEducationIPv4 IPv6115

Adjacency

Adjacent networks

All 22

Every AS seen directly next to AS51531 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6483
AS715WoodyNet, Inc.UnclassifiedIPv4130
AS196610DE-CIX Management GmbHEducationIPv4 IPv6115
AS1299Arelion Sweden ABTransitIPv4 IPv688
AS33891Core-Backbone GmbHHostingIPv4 IPv680
AS13101TNG Stadtnetz GmbHResidentialIPv4 IPv655
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv625
AS22652Videotron LteeResidentialIPv4 IPv618
AS14907Wikimedia Foundation Inc.HostingIPv4 IPv611
AS24482SG.GSHostingIPv4 IPv611

All 22 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-11 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.47M 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.