asn.dev

Observed topology

AS137443 CHANGLIAN-AS-AP - ChangLian Network Technology Co., Limited

Hosting ARIN

Upstreams 5 carry this network
Downstreams 5 this network carries
Adjacent (IPv4) 11
Adjacent (IPv6) 1
Upstream graph Who carries AS137443, and who carries them, drawn as a map up to the transit-free core. 1 exchange Where AS137443 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS137443: 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
AS393437KLAYER LLCUnclassifiedIPv4399
AS150706Hong Kong Zhengxing Technology Co., Ltd.UnclassifiedIPv4108
AS21859Zenlayer IncHostingIPv4 IPv690
AS139076EnjoyVC Japan CorporationUnclassifiedIPv458
AS23764CTGNetUnclassifiedIPv47

Transit

Downstream networks

inferred

Networks for which AS137443 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS215731Novus Labs LimitedUnclassifiedIPv41,103
AS25862ISNX LLCUnclassifiedIPv4696
AS149014bo jingUnclassifiedIPv458
AS132585SkyExchange Internet AccessUnclassifiedIPv412
AS136744DREAM POWER TECHNOLOGY LIMITEDUnclassifiedIPv41

Adjacency

Adjacent networks

All 11

Every AS seen directly next to AS137443 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS136897Enjoyvc Cloud Group Limited.HostingIPv41,799
AS215731Novus Labs LimitedUnclassifiedIPv41,103
AS25862ISNX LLCUnclassifiedIPv4696
AS393437KLAYER LLCUnclassifiedIPv4399
AS21859Zenlayer IncHostingIPv4 IPv6148
AS150706Hong Kong Zhengxing Technology Co., Ltd.UnclassifiedIPv4109
AS139076EnjoyVC Japan CorporationUnclassifiedIPv458
AS149014bo jingUnclassifiedIPv458
AS23764CTGNetUnclassifiedIPv419
AS132585SkyExchange Internet AccessUnclassifiedIPv412

All 11 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.