asn.dev

Observed topology

AS23911 CNGI-BJIX-AS-AP China Next Generation Internet Beijing IX

Unclassified APNIC

Upstreams 4 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 6
Adjacent (IPv6) 15
Upstream graph Who carries AS23911, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS23911 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS23911: 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
AS24489Trans-Eurasia Information Network (TEIN2) - NorthUnclassifiedIPv4 IPv611
AS7660Asia Pacific Advanced Network - JapanUnclassifiedIPv44
AS4538China Education and Research Network CenterEducationIPv61
AS20965GEANT VerenigingUnclassifiedIPv61

Transit

Downstream networks

inferred

Networks for which AS23911 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS4538China Education and Research Network CenterEducationIPv4633
AS23910China Next Generation Internet CERNET2UnclassifiedIPv6145
AS24489Trans-Eurasia Information Network (TEIN2) - NorthUnclassifiedIPv440
AS45110Beijing Tian Wei Xin Tong technology corp. limited.UnclassifiedIPv636
AS59265China telecom – China Next Generation InternetUnclassifiedIPv624
AS38255China Education and Research Network (CERNET)UnclassifiedIPv4 IPv613
AS9401National Library of ChinaUnclassifiedIPv44

Adjacency

Adjacent networks

All 16

Every AS seen directly next to AS23911 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS38255China Education and Research Network (CERNET)UnclassifiedIPv4 IPv610,839
AS24482SG.GSHostingIPv64,560
AS11537Internet2UnclassifiedIPv64,136
AS6939Hurricane Electric LLCTransitIPv63,920
AS23910China Next Generation Internet CERNET2UnclassifiedIPv63,264
AS7660Asia Pacific Advanced Network - JapanUnclassifiedIPv4 IPv61,063
AS4538China Education and Research Network CenterEducationIPv4 IPv6983
AS1273IDDQD-ASBusinessIPv6433
AS4635Hong Kong Internet Exchange--Route Server 1UnclassifiedIPv6360
AS3491PCCW Global (HK) Ltd.TransitIPv6345

All 16 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-14 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.25M 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.