$ query “AS23764” --type=asn → 1 result(s)

AS23764 · CTGNET

China Telecom Global Limited

AS23764 is operated by China Telecom Global Limited and serves as a major transit provider, based in Hong Kong SAR China. The system announces a respectable 50 432 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to Hong Kong SAR China, with additional presence in Singapore and Germany, and smaller footprints in 20 additional countries.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #33 by Reach — Top 100 by customer cone size
  • #3 in Hong Kong SAR China — Top 10 by reach within country

Basic Information

Country
🇭🇰 Hong Kong SAR China
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
April 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
183 / 123
IPv6 Prefixes (raw / aggregated)
29 / 29
IPv4 Addresses
50 432
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/48
Geolocated Countries
🇭🇰 Hong Kong SAR China (30 720 IPs), 🇸🇬 Singapore (7 680 IPs), 🇩🇪 Germany (5 120 IPs) and 20 more
Prefix Changed
March 22, 2026

Reputation

Reputation
Good — 3 flagged IPs out of 50 432 total (0.01%)
Open Proxies
2 known open proxies in this network

Connectivity Summary

Upstream Providers
18 upstreams providing transit
Peers
771 networks exchanging traffic without transit
Downstream Customers
132 downstreams buying transit
Unclassified
15 unclassified BGP neighbors
Degree
936 unique BGP neighbors
Reach
45 558 networks in customer cone

Upstream Providers (18)

  • AS6939 — HURRICANE
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS37100 — SEACOM-AS
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS3549 — LVLT-3549
  • AS30844 — LIQUID-AS
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS8966 — ETISALAT-AS
  • AS3491 — PCCWG-APAC-HK (Tier-1 transit)
  • and 8 more

Prefix Lists

IPv4 Prefixes (183 total)

  • 203.196.8.0/21 (2 048 addresses (/21 prefix))
  • 202.55.8.0/21 (2 048 addresses (/21 prefix))
  • 203.20.136.0/21 (2 048 addresses (/21 prefix))
  • 131.221.80.0/22 (1 024 addresses (/22 prefix))
  • 5.154.144.0/22 (1 024 addresses (/22 prefix))
  • 5.154.156.0/22 (1 024 addresses (/22 prefix))
  • 203.12.200.0/22 (1 024 addresses (/22 prefix))
  • 203.14.188.0/22 (1 024 addresses (/22 prefix))
  • 203.19.32.0/22 (1 024 addresses (/22 prefix))
  • 203.80.136.0/22 (1 024 addresses (/22 prefix))
  • 210.48.136.0/22 (1 024 addresses (/22 prefix))
  • 69.194.172.0/22 (1 024 addresses (/22 prefix))
  • 218.30.62.0/23 (512 addresses (/23 prefix))
  • 203.33.8.0/23 (512 addresses (/23 prefix))
  • 203.119.124.0/23 (512 addresses (/23 prefix))
  • 63.140.8.0/23 (512 addresses (/23 prefix))
  • 79.139.4.0/23 (512 addresses (/23 prefix))
  • 203.99.10.0/23 (512 addresses (/23 prefix))
  • 203.89.10.0/23 (512 addresses (/23 prefix))
  • 79.139.10.0/23 (512 addresses (/23 prefix))
  • 203.86.126.0/23 (512 addresses (/23 prefix))
  • 203.82.18.0/23 (512 addresses (/23 prefix))
  • 203.81.6.0/23 (512 addresses (/23 prefix))
  • 154.72.40.0/23 (512 addresses (/23 prefix))
  • 203.34.196.0/23 (512 addresses (/23 prefix))
  • 203.144.104.0/23 (512 addresses (/23 prefix))
  • 102.217.166.0/23 (512 addresses (/23 prefix))
  • 220.174.26.0/23 (512 addresses (/23 prefix))
  • 45.196.24.0/23 (512 addresses (/23 prefix))
  • 203.15.116.0/23 (512 addresses (/23 prefix))
  • 220.174.94.0/23 (512 addresses (/23 prefix))
  • 203.12.204.0/23 (512 addresses (/23 prefix))
  • 45.195.4.0/23 (512 addresses (/23 prefix))
  • 202.55.16.0/23 (512 addresses (/23 prefix))
  • 5.154.154.0/23 (512 addresses (/23 prefix))
  • 202.55.6.0/23 (512 addresses (/23 prefix))
  • 220.247.140.0/23 (512 addresses (/23 prefix))
  • 202.55.2.0/23 (512 addresses (/23 prefix))
  • 121.59.109.0/24 (256 addresses (/24 prefix))
  • 203.80.141.0/24 (256 addresses (/24 prefix))
  • 145.14.79.0/24 (256 addresses (/24 prefix))
  • 145.14.92.0/24 (256 addresses (/24 prefix))
  • 147.78.133.0/24 (256 addresses (/24 prefix))
  • 147.78.135.0/24 (256 addresses (/24 prefix))
  • 145.14.64.0/24 (256 addresses (/24 prefix))
  • 154.72.43.0/24 (256 addresses (/24 prefix))
  • 154.72.45.0/24 (256 addresses (/24 prefix))
  • 154.72.46.0/24 (256 addresses (/24 prefix))
  • 154.209.21.0/24 (256 addresses (/24 prefix))
  • 154.209.23.0/24 (256 addresses (/24 prefix))
  • and 73 more

IPv6 Prefixes (29 total)

  • 2400:9380:9002::/48
  • 2400:9380:9115::/48
  • 2400:9380:9116::/48
  • 2400:9380:9206::/48
  • 2400:9380:9262::/48
  • 2400:9380:a003::/48
  • 2400:9380:a00a::/48
  • 2400:9380:a00c::/48
  • 2400:9380:a014::/48
  • 2400:9380:a016::/48
  • 2400:9380:a01f::/48
  • 2400:9380:a022::/48
  • 2400:9380:a028::/48
  • 2400:9380:a042::/48
  • 2400:9380:a110::/48
  • 240e:97d:8000::/48
  • 2804:1e48:9003::/48
  • 2a04:f580:9001::/48
  • 2a04:f580:9090::/48
  • 2a04:f581:110b::/48
  • 2a04:f581:a123::/48
  • 2a04:f581:a125::/48
  • 2c0f:f7a8:1::/48
  • 2c0f:f7a8:2::/48
  • 2c0f:f7a8:24::/48
  • 2c0f:f7a8:29::/48
  • 2c0f:f7a8:37::/48
  • 2c0f:f7a8:47::/48
  • 2c0f:f7a8:9011::/48