asn.dev

Observed topology

AS198037 SPACECORE

Unclassified RIPE NSP

Upstreams 5 carry this network
Downstreams 2 this network carries
Adjacent (IPv4) 6
Adjacent (IPv6) 4
Upstream graph Who carries AS198037, and who carries them, drawn as a map up to the transit-free core. 2 exchanges Where AS198037 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS198037: 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
AS199524G-Core Labs S.A.HostingIPv4 IPv6903
AS49981WorldStream B.V.HostingIPv4116
AS59554Datacenter Groningen B.V.HostingIPv4 IPv694
AS50673Serverius Holding B.V.UnclassifiedIPv4 IPv616
AS24482SG.GSHostingIPv62

Transit

Downstream networks

inferred

Networks for which AS198037 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS211955NOTBAD HOSTING LTDUnclassifiedIPv4175
AS210993unnamedUnclassifiedIPv42

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS198037 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS199524G-Core Labs S.A.HostingIPv4 IPv61,137
AS211955NOTBAD HOSTING LTDUnclassifiedIPv4235
AS49981WorldStream B.V.HostingIPv4116
AS59554Datacenter Groningen B.V.HostingIPv4 IPv694
AS50673Serverius Holding B.V.UnclassifiedIPv4 IPv622
AS210993unnamedUnclassifiedIPv45
AS24482SG.GSHostingIPv62

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.