asn.dev

Observed topology

AS1101 IP-EEND-AS SURF B.V.

Unclassified RIPE

Upstreams 25 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 27
Adjacent (IPv6) 17
Upstream graph Who carries AS1101, and who carries them, drawn as a map up to the transit-free core. 4 exchanges Where AS1101 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 25

Networks observed carrying traffic for AS1101: 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
AS64404Stichting EventInfraUnclassifiedIPv4 IPv6511
AS1103SURF B.V.UnclassifiedIPv4 IPv6149
AS6939Hurricane Electric LLCTransitIPv4 IPv6108
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv617
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv617
AS24482SG.GSHostingIPv4 IPv617
AS42708Glesys Sweden ABUnclassifiedIPv4 IPv617
AS48185team.blue NVUnclassifiedIPv4 IPv617
AS204092Association GRIFONUnclassifiedIPv4 IPv617
AS213241TECHIT.BE SRLResidentialIPv4 IPv617

All 25 upstreams →

Transit

Downstream networks

inferred

Networks for which AS1101 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS1106SURF B.V.UnclassifiedIPv4 IPv6155
AS1102SURF B.V.UnclassifiedIPv4122
AS215125Church of CyberologyUnclassifiedIPv4 IPv695
AS214380Tim de Boer trading as tim427.netUnclassifiedIPv429
AS201616Theo HolroydUnclassifiedIPv61

Adjacency

Adjacent networks

All 30

Every AS seen directly next to AS1101 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS64404Stichting EventInfraUnclassifiedIPv4 IPv6776
AS1103SURF B.V.UnclassifiedIPv4 IPv6228
AS1106SURF B.V.UnclassifiedIPv4 IPv6155
AS6939Hurricane Electric LLCTransitIPv4 IPv6126
AS1102SURF B.V.UnclassifiedIPv4122
AS215125Church of CyberologyUnclassifiedIPv4 IPv695
AS214380Tim de Boer trading as tim427.netUnclassifiedIPv429
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv622
AS42708Glesys Sweden ABUnclassifiedIPv4 IPv622
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv621

All 30 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.