subnet.im

AS137443ChangLian Network Technology Co., Limited

Hong Kong SAR ChinaRegistryAPNIC

As of 27th September 2026, AS137443 (ChangLian Network Technology Co.…), a network registered in Hong Kong SAR China with APNIC, originates 21 IPv4 prefixes covering 5.6k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 14,734th-largest of the 79,523 networks we see originating IPv4, and the 210th-largest of 734 in Hong Kong SAR China. It is seen behind 6 upstream networks, most often AS136897 (Enjoyvc Cloud Group Limited.) and AS393437 (KLAYER LLC), and in front of 8 downstream networks. 43% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 48% of its routes reach at least 90% of full-feed peers, and 11 prefixes are also originated by another network.

At a glance

IPv4 prefixes

21

IPv6 prefixes

2

IPv4 addresses

5.6k

IPv6 /64s

67.1M

Upstream graph

The networks AS137443 is seen behind, one and two hops out, drawn from real AS paths.

AS137443Toward the internet core
Upstream graph for AS137443: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS137443ChangLian Network…This networkAS21859Zenlayer IncAS136897Enjoyvc Cloud Gro…AS139076EnjoyVC Japan Cor…AS150706Hong Kong Zhengxi…AS393437KLAYER LLCAS4229Zenlayer IncAS2914NTT America, Inc.AS23764China Telecom Glo…AS45430SBN-IIG/AWN-IIG t…AS174Cogent Communicat…AS3491PCCW Global (HK) …AS4809China Telecom Nex…

Networks observed one and two hops upstream of AS137443 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

28

adjacent networks

Upstreams
621%
Peers
1450%
Downstreams
829%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS137443
NetworkCountryRelationshipPathsVantage pts
AS136897Enjoyvc Cloud Group Limited.HKPeer4,01181
AS393437KLAYER LLCUSPeer56781
AS21859Zenlayer IncUSPeer225144
AS150706Hong Kong Zhengxing Technology Co., Ltd.HKPeer13581
AS139076EnjoyVC Japan CorporationJPPeer8080
AS23764China Telecom GlobalHKPeer558

Prefixes

The largest blocks AS137443 originates, widest first.

Largest prefixes originated by AS137443
PrefixAddressesVisibility
154.209.2.0/235121/81
43.231.185.0/2425681/81
45.192.176.0/2425681/81
45.192.177.0/2425680/81
103.50.254.0/2425681/81
103.50.255.0/2425681/81
103.80.28.0/242566/81
103.80.29.0/242566/81
103.80.30.0/242566/81
103.80.31.0/242566/81

Routing health

How AS137443's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid43.5%10
  • Invalid0.0%0
  • No ROA56.5%13

Propagation

  • Globally propagated90% of full-feed peers or more47.8%11
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%52.2%12

Prefix sizes

IPv4 — 21 prefixes

IPv6 — 2 prefixes

  • /3933.6M × /64100.0%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn2404:de80:200::/3924th Sept 2026
  • Announced154.223.188.0/2423rd Sept 2026
  • Withdrawn154.223.188.0/2422nd Sept 2026

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.