AS23724 IDC, China Telecommunications Corporation

CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation · registered in China

IPv4 addresses2,151,424701 prefixes · 0.069% of announced IPv4

Rank in China#16largest network in CN by IPv4 space, of 601 · 0.74% of CN

Rank worldwide#186of 79,396 networks with IPv4

IPv65 x /32 (339,789 x /48)63 prefixes

CountryChina5,117 ASNs registered there

Open AS23724 in ASN lookup Look up an IP in this network (1.203.94.1) All networks in China

IPv4 prefixes

First 500 of 701 prefixes, in address order.

1.203.94.0/23
1.203.115.0/24
1.203.124.0/22
36.110.128.0/19
36.110.160.0/20
36.110.176.0/22
36.110.180.0/23
36.110.182.0/24
36.110.183.0/24
36.110.184.0/23
36.110.186.0/24
36.110.187.0/24
36.110.188.0/22
36.110.192.0/24
36.110.193.0/24
36.110.194.0/23
36.110.196.0/22
36.110.200.0/21
36.110.208.0/22
36.110.212.0/24
36.110.214.0/23
36.110.217.0/24
36.110.218.0/23
36.110.220.0/22
36.110.224.0/22
36.110.228.0/22
36.110.232.0/23
36.110.236.0/22
36.110.240.0/20
36.111.80.0/23
36.111.88.0/24
36.111.148.0/23
36.112.128.0/21
36.112.136.0/22
36.112.142.0/23
36.112.145.0/24
36.112.146.0/23
36.112.148.0/23
36.112.150.0/24
36.112.154.0/23
36.112.156.0/22
36.112.168.0/23
36.112.235.0/24
42.62.0.0/17
42.158.0.0/16
43.231.160.0/22
43.231.167.0/24
43.231.168.0/23
43.231.170.0/24
43.243.232.0/22
43.247.176.0/20
45.254.64.0/20
49.4.32.0/20
49.4.128.0/22
49.7.0.0/19
49.7.32.0/20
49.7.48.0/24
49.7.49.0/24
49.7.50.0/23
49.7.52.0/22
49.7.56.0/21
49.7.64.0/19
49.7.96.0/22
49.7.100.0/22
49.7.104.0/21
49.7.112.0/20
49.7.128.0/19
49.7.160.0/20
49.7.176.0/22
49.7.180.0/23
49.7.182.0/24
49.7.183.0/24
49.7.184.0/21
49.7.192.0/20
49.7.208.0/21
49.7.216.0/23
49.7.218.0/23
49.7.220.0/24
49.7.221.0/24
49.7.222.0/23
49.7.224.0/23
49.7.226.0/23
49.7.228.0/22
49.7.232.0/21
49.7.240.0/20
58.83.192.0/19
58.83.224.0/20
58.83.240.0/21
58.83.248.0/22
58.83.252.0/23
58.83.255.0/24
59.151.0.0/20
59.151.16.0/23
59.151.20.0/22
59.151.24.0/21
59.151.64.0/18
61.4.80.0/23
101.36.64.0/20
101.36.192.0/19
101.36.224.0/21
101.36.240.0/20
101.124.0.0/20
101.124.19.0/24
101.124.22.0/24
101.124.24.0/21
101.124.62.0/24
101.198.0.0/22
101.198.4.0/24
101.236.128.0/17
101.237.33.0/24
101.237.34.0/23
101.237.36.0/22
101.237.40.0/24
101.237.128.0/20
101.251.195.0/24
101.251.202.0/24
101.251.204.0/22
101.251.208.0/20
101.251.227.0/24
101.251.229.0/24
101.251.232.0/24
101.251.236.0/24
101.251.239.0/24
101.251.240.0/24
101.251.242.0/24
101.251.244.0/23
101.251.247.0/24
101.251.248.0/24
101.251.251.0/24
101.254.0.0/20
101.254.32.0/19
101.254.64.0/19
101.254.96.0/23
101.254.98.0/24
101.254.100.0/22
101.254.104.0/21
101.254.112.0/20
101.254.128.0/17
103.17.40.0/22
103.26.0.0/22
103.26.64.0/23
103.28.8.0/24
103.37.72.0/22
103.70.8.0/22
103.74.24.0/21
103.74.48.0/22
103.102.200.0/22
103.107.216.0/21
103.149.242.0/24
103.227.78.0/23
103.227.80.0/23
103.227.122.0/23
103.231.68.0/22
103.235.220.0/22
103.235.226.0/23
103.235.228.0/22
103.235.232.0/21
103.235.248.0/21
103.237.8.0/22
103.242.172.0/22
103.244.80.0/22
103.244.232.0/22
103.247.168.0/22
103.249.254.0/23
103.254.188.0/22
106.0.6.0/23
106.2.128.0/20
106.2.144.0/21
106.2.152.0/22
106.2.156.0/23
106.3.0.0/19
106.3.80.0/22
106.3.88.0/21
106.3.128.0/21
106.3.136.0/23
106.3.138.0/24
106.3.140.0/22
106.3.152.0/21
106.3.192.0/20
106.13.244.0/22
106.13.248.0/23
106.37.72.0/22
106.38.138.0/23
106.38.176.0/22
106.38.180.0/23
106.38.182.0/24
106.38.183.0/24
106.38.184.0/22
106.38.188.0/23
106.38.191.0/24
106.38.192.0/20
106.38.208.0/22
106.38.212.0/22
106.38.216.0/22
106.38.220.0/23
106.38.222.0/24
106.38.223.0/24
106.38.224.0/20
106.38.240.0/21
106.38.248.0/22
106.38.252.0/24
106.38.253.0/24
106.38.254.0/23
106.39.160.0/22
106.39.164.0/24
106.39.165.0/24
106.39.166.0/23
106.39.168.0/21
106.39.176.0/21
106.39.184.0/23
106.39.186.0/23
106.39.188.0/22
106.39.192.0/20
106.39.208.0/21
106.39.216.0/23
106.39.218.0/24
106.39.220.0/22
106.39.224.0/19
106.63.3.0/24
106.63.4.0/22
106.63.8.0/23
106.63.10.0/24
106.75.0.0/17
106.120.144.0/21
106.120.152.0/23
106.120.154.0/23
106.120.156.0/22
106.120.161.0/24
106.120.162.0/23
106.120.164.0/22
106.120.168.0/22
106.120.172.0/24
106.120.173.0/24
106.120.174.0/23
106.120.176.0/20
110.43.64.0/20
110.43.90.0/23
110.43.160.0/20
110.43.176.0/21
110.43.192.0/22
110.43.196.0/24
110.43.198.0/23
110.43.200.0/21
110.43.208.0/20
110.173.8.0/21
110.173.16.0/20
110.173.32.0/20
113.59.224.0/22
114.64.0.0/16
114.67.131.0/24
114.67.136.0/24
114.67.150.0/24
114.67.152.0/22
114.67.156.0/24
114.67.159.0/24
114.67.224.0/19
114.110.0.0/20
114.112.4.0/23
114.112.24.0/21
114.112.32.0/19
114.112.72.0/21
114.112.96.0/21
114.112.104.0/22
114.113.208.0/21
114.115.0.0/17
114.115.128.0/18
114.115.224.0/19
114.116.64.0/18
114.116.128.0/18
114.116.192.0/19
114.118.0.0/19
114.118.64.0/18
115.102.0.0/16
116.196.0.0/21
116.196.8.0/22
116.196.12.0/23
116.196.64.0/18
116.196.218.0/23
116.196.220.0/22
116.198.0.0/21
116.198.8.0/22
116.198.12.0/22
116.198.16.0/20
116.198.32.0/19
116.198.64.0/21
116.198.72.0/22
116.198.96.0/19
117.48.32.0/19
117.48.64.0/20
117.48.80.0/21
117.48.88.0/22
117.48.100.0/22
117.48.104.0/21
117.48.112.0/20
117.50.0.0/16
117.51.160.0/23
117.72.0.0/24
117.73.0.0/20
117.73.18.0/23
117.73.20.0/22
117.79.80.0/21
117.79.88.0/23
117.79.90.0/23
117.79.92.0/22
117.79.128.0/23
117.79.130.0/23
117.79.132.0/22
117.79.144.0/21
117.79.152.0/23
117.79.154.0/23
117.79.156.0/22
117.107.128.0/17
117.118.128.0/17
118.26.48.0/22
118.26.192.0/24
118.26.194.0/23
118.26.208.0/20
118.26.240.0/23
118.26.242.0/24
118.26.243.0/24
118.26.244.0/22
118.26.248.0/21
118.102.16.0/22
118.102.20.0/23
118.102.24.0/22
118.102.29.0/24
118.102.30.0/23
118.126.140.0/23
118.126.142.0/24
118.186.0.0/22
118.186.4.0/23
118.186.6.0/24
118.186.8.0/21
118.186.16.0/20
118.186.32.0/24
118.186.34.0/23
118.186.36.0/22
118.186.56.0/21
118.186.64.0/21
118.186.80.0/21
118.186.240.0/21
118.187.0.0/19
118.187.64.0/20
118.193.96.0/19
118.194.32.0/19
119.61.0.0/18
119.61.64.0/18
119.61.129.0/24
119.61.130.0/23
119.61.132.0/22
119.61.136.0/21
119.61.144.0/20
119.61.160.0/19
119.61.192.0/18
119.80.240.0/22
119.254.0.0/20
119.254.32.0/22
119.254.36.0/24
119.254.38.0/23
119.254.48.0/20
119.254.64.0/19
119.254.96.0/20
119.254.128.0/21
119.254.160.0/19
119.254.192.0/20
119.254.208.0/21
119.254.224.0/22
119.254.228.0/24
119.254.230.0/23
119.254.232.0/22
119.254.237.0/24
119.254.238.0/23
119.254.248.0/22
119.254.252.0/23
119.254.254.0/24
119.255.128.0/21
119.255.144.0/20
119.255.160.0/19
119.255.192.0/18
120.92.8.0/23
120.92.194.0/23
120.92.196.0/22
120.92.200.0/21
120.92.208.0/24
120.92.210.0/24
120.92.212.0/22
120.92.220.0/22
120.132.32.0/19
120.132.64.0/19
120.132.128.0/22
120.132.133.0/24
120.132.134.0/23
120.132.140.0/22
120.132.144.0/23
120.132.147.0/24
120.132.148.0/22
120.132.152.0/24
120.132.154.0/24
120.132.156.0/22
120.132.160.0/20
120.132.176.0/24
120.132.179.0/24
120.132.180.0/24
120.132.182.0/23
120.132.184.0/21
120.132.192.0/19
120.132.232.0/21
120.132.242.0/23
120.132.244.0/22
120.132.248.0/21
120.133.32.0/20
120.133.48.0/23
120.133.50.0/24
120.133.52.0/22
120.133.56.0/21
120.133.64.0/19
120.133.148.0/22
120.133.152.0/21
120.133.160.0/19
120.133.192.0/20
120.133.208.0/21
120.133.232.0/22
120.135.1.0/24
120.135.2.0/23
120.135.4.0/22
120.135.8.0/21
120.135.16.0/20
120.135.32.0/19
120.135.64.0/18
120.135.128.0/17
122.9.0.0/19
122.9.32.0/20
122.11.32.0/19
122.112.32.0/19
122.115.0.0/20
122.115.224.0/20
123.58.16.0/23
123.58.19.0/24
123.58.20.0/22
123.58.24.0/21
123.59.0.0/16
123.103.4.0/22
123.103.8.0/24
123.103.9.0/24
123.103.10.0/23
123.103.12.0/22
123.103.16.0/21
123.103.40.0/21
123.103.48.0/20
123.103.72.0/21
123.103.80.0/20
123.103.112.0/20
124.42.0.0/21
124.42.16.0/20
124.42.32.0/23
124.42.40.0/21
124.42.48.0/24
124.42.50.0/23
124.42.52.0/22
124.42.56.0/21
124.126.14.0/23
124.243.192.0/18
124.250.128.0/18
124.250.192.0/19
124.250.224.0/20
124.250.240.0/22
124.250.246.0/23
124.250.252.0/22
124.251.0.0/21
124.251.10.0/23
124.251.12.0/22
124.251.16.0/20
124.251.32.0/21
124.251.40.0/22
124.251.52.0/22
124.251.56.0/21
124.251.136.0/21
124.251.144.0/20
124.251.160.0/19
124.251.192.0/20
124.251.208.0/22
124.251.212.0/23
124.251.214.0/24
124.251.216.0/21
124.251.224.0/22
124.251.232.0/22
124.251.245.0/24
124.251.246.0/23
124.251.248.0/22
124.251.253.0/24
124.251.254.0/23
125.254.128.0/19
125.254.168.0/21
125.254.176.0/21
139.159.0.0/19
139.159.166.0/23
140.210.96.0/19
150.242.248.0/22
175.25.16.0/21
175.25.28.0/22

IPv6 prefixes

All 63 prefixes.

2400:5280:f803::/48
2400:89c0:1050::/46
2400:89c0:6000::/48
2400:b700::/48
2401:1d40:f8::/45
2401:1d40:f23::/48
2401:1d40:f24::/48
2401:3480::/36
2402:5ec0::/35
2402:5ec0:2000::/35
2402:5ec0:4000::/34
2402:5ec0:8000::/33
2402:db40:5100::/48
2402:db40:5f00::/46
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
2406:cf00:1000::/43
2407:b380:8000::/48
2409:27fa::/48
2409:27fa:f000::/48
240a:2001:1811::/48
240a:2001:1861::/48
240e:0:9000::/36
240e:83::/37
240e:83:ff00::/40
240e:108:49::/48
240e:108:80::/48
240e:108:1002::/48
240e:108:100b::/48
240e:904::/35
240e:904:2000::/37
240e:904:2800::/46
240e:904:2804::/46
240e:904:2808::/45
240e:904:2810::/44
240e:904:2820::/43
240e:904:2840::/42
240e:904:2880::/41
240e:904:2900::/40
240e:904:2a00::/39
240e:904:2c00::/38
240e:904:3000::/36
240e:904:4000::/34
240e:904:8000::/33
240e:905::/32
240e:906::/31
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:983::/48
240e:983:2::/47
240e:983:4::/48

Similar-sized networks in China

ASNNameIPv4 addresses

AS9394#13 CTTNET - China TieTong Telecommunications Corporation2,664,704

AS17816#14 CHINA169-GZ - China Unicom IP network China169 Guangdong province2,657,280

AS132203#15 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue2,175,999

AS56045#17 CMNET-Jiangxi-AP - China Mobile communications corporation1,968,384

AS24445#18 CMNET-V4henan-AS-AP - Henan Mobile Communications Co.,Ltd1,939,456

AS24444#19 CMNET-V4shandong-AS-AP - Shandong Mobile Communication Company Limited1,846,016

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources