$ query “AS23724” --type=asn → 1 result(s)

AS23724 — CHINANET-IDC-BJ-AP

IDC China Telecommunications Corporation

AS23724 is a mid-size transit provider operated by IDC China Telecommunications Corporation, registered in China. The network announces an impressive 2.9 million IPv4 addresses, including a /15. Supports IPv6.

Basic Information

Country
🇨🇳 China
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
March 05, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
817 / 326
IPv6 Prefixes (raw / aggregated)
88 / 50
IPv4 Addresses
2 867 968
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/30
Geolocated Countries
🇨🇳 CN (369 IPs), 🇦🇺 AU (16 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 155 flagged IPs out of 2 867 968 total (0.01%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
2 upstream autonomous systems providing transit
Peers
1 autonomous systems exchanging traffic without transit fees
Downstream Customers
14 downstream autonomous systems buying transit
Degree
17 unique BGP neighbors (providers + customers + peers)
Reach
15 — customer cone size measuring network influence
Degree Rank
#8 235
Reach Rank
#2 606

Upstream Providers (2)

  • AS4134 — CHINANET-BACKBONE
  • AS4809 — CHINATELECOM-CORE-WAN-CN2

Prefix Lists

IPv4 Prefixes (817 total)

  • 120.134.0.0/15 (131 072 addresses)
  • 124.250.0.0/15 (131 072 addresses)
  • 182.174.0.0/15 (131 072 addresses)
  • 183.84.0.0/15 (131 072 addresses)
  • 42.158.0.0/16 (65 536 addresses)
  • 49.7.0.0/16 (65 536 addresses)
  • 114.64.0.0/16 (65 536 addresses)
  • 115.102.0.0/16 (65 536 addresses)
  • 117.50.0.0/16 (65 536 addresses)
  • 119.61.0.0/16 (65 536 addresses)
  • 119.254.0.0/16 (65 536 addresses)
  • 120.133.0.0/16 (65 536 addresses)
  • 123.59.0.0/16 (65 536 addresses)
  • 211.151.0.0/16 (65 536 addresses)
  • 221.122.0.0/16 (65 536 addresses)
  • 36.110.128.0/17 (32 768 addresses)
  • 42.62.0.0/17 (32 768 addresses)
  • 58.83.128.0/17 (32 768 addresses)
  • 59.151.0.0/17 (32 768 addresses)
  • 101.36.128.0/17 (32 768 addresses)
  • 101.236.128.0/17 (32 768 addresses)
  • 101.254.128.0/17 (32 768 addresses)
  • 106.75.0.0/17 (32 768 addresses)
  • 114.115.0.0/17 (32 768 addresses)
  • 117.107.128.0/17 (32 768 addresses)
  • 117.118.128.0/17 (32 768 addresses)
  • 119.255.128.0/17 (32 768 addresses)
  • 120.92.0.0/17 (32 768 addresses)
  • 120.132.128.0/17 (32 768 addresses)
  • 211.157.128.0/17 (32 768 addresses)
  • 220.181.0.0/17 (32 768 addresses)
  • 221.123.128.0/17 (32 768 addresses)
  • 101.251.192.0/18 (16 384 addresses)
  • 106.38.192.0/18 (16 384 addresses)
  • 106.39.192.0/18 (16 384 addresses)
  • 106.121.128.0/18 (16 384 addresses)
  • 114.115.128.0/18 (16 384 addresses)
  • 114.116.64.0/18 (16 384 addresses)
  • 114.116.128.0/18 (16 384 addresses)
  • 116.196.64.0/18 (16 384 addresses)
  • 116.198.0.0/18 (16 384 addresses)
  • 122.14.192.0/18 (16 384 addresses)
  • 124.42.0.0/18 (16 384 addresses)
  • 124.243.192.0/18 (16 384 addresses)
  • 140.210.64.0/18 (16 384 addresses)
  • 211.100.0.0/18 (16 384 addresses)
  • 211.150.0.0/18 (16 384 addresses)
  • 101.236.96.0/19 (8 192 addresses)
  • 101.254.32.0/19 (8 192 addresses)
  • 101.254.64.0/19 (8 192 addresses)

IPv6 Prefixes (88 total)

  • 240e:904::/30
  • 2402:5ec0::/32
  • 2401:3480::/36
  • 240e:0:9000::/36
  • 240e:83::/37
  • 240e:83:ff00::/40
  • 240e:980:4900::/40
  • 240e:980:8000::/40
  • 240e:981:200::/40
  • 240e:981:400::/40
  • 240e:981:900::/40
  • 240e:981:9300::/40
  • 240e:981:f500::/40
  • 2406:cf00:1000::/43
  • 2401:1d40:f8::/45
  • 2400:89c0:1050::/46
  • 2402:db40:5f00::/46
  • 2401:1d40:f22::/47
  • 240e:900:8::/47
  • 240e:983:2::/47
  • 2400:5280:f803::/48
  • 2400:89c0:6000::/48
  • 2400:b700::/48
  • 2401:1d40::/48
  • 2401:1d40:100::/48
  • 2401:1d40:f21::/48
  • 2401:1d40:f24::/48
  • 2401:be00::/48
  • 2402:db40:5100::/48
  • 2402:f140:ff00::/48
  • 2403:1ec0:1200::/48
  • 2403:4280::/48
  • 2403:5c80::/48
  • 2403:a140:10::/48
  • 2403:a200:a2ff::/48
  • 2405:1480:2000::/48
  • 2406:1080::/48
  • 2406:4d00::/48
  • 2406:cf00::/48
  • 2407:b380:8000::/48
  • 2409:27fa::/48
  • 2409:27fa:f000::/48
  • 240a:2001:1811::/48
  • 240a:2001:1861::/48
  • 240e:108:49::/48
  • 240e:108:80::/48
  • 240e:108:1002::/48
  • 240e:108:100b::/48
  • 240e:983::/48
  • 240e:983:4::/48