asn.dev

Observed topology

AS137207 JUCC-AS-AP Joint Universities Computer Centre Limited

Unclassified APNIC Educational/Research

Upstreams 4 carry this network
Downstreams 8 this network carries
Adjacent (IPv4) 13
Adjacent (IPv6) 8
Upstream graph Who carries AS137207, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS137207 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS137207: 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
AS11537Internet2UnclassifiedIPv43
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv4 IPv63
AS20965GEANT VerenigingUnclassifiedIPv4 IPv62
AS7660JapanUnclassifiedIPv41

Transit

Downstream networks

inferred

Networks for which AS137207 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS7651Lingnan UniversityEducationIPv492
AS3363Hong Kong University of Science and TechnologyEducationIPv4 IPv686
AS4158City University of Hong KongEducationIPv4 IPv660
AS4605Hong Kong Baptist UniversityEducationIPv4 IPv659
AS4528The University of Hong KongEducationIPv4 IPv652
AS4616The Hong Kong Polytechnic UniversityEducationIPv449
AS3661The Chinese University of Hong KongEducationIPv4 IPv644
AS3662Joint Universities Computer Centre LimitedEducationIPv4 IPv643

Adjacency

Adjacent networks

All 13

Every AS seen directly next to AS137207 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS11537Internet2UnclassifiedIPv4287
AS23855Singapore Advanced Research and Education NetworkUnclassifiedIPv4 IPv6256
AS3662Joint Universities Computer Centre LimitedEducationIPv4 IPv6229
AS7651Lingnan UniversityEducationIPv492
AS3363Hong Kong University of Science and TechnologyEducationIPv4 IPv686
AS20965GEANT VerenigingUnclassifiedIPv4 IPv668
AS7660JapanUnclassifiedIPv467
AS4158City University of Hong KongEducationIPv4 IPv660
AS4605Hong Kong Baptist UniversityEducationIPv4 IPv659
AS4528The University of Hong KongEducationIPv4 IPv652

All 13 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-26 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M 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.