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AS23724
CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation

AS23724 announces 1,886,976 IPv4 addresses across 317 routed ranges, registered in CN. Figures come from the public global routing table and are refreshed daily.

1.9M addressesIPv4 space announced
317Routed ranges
CNRegistry country

Is AS23724 datacenter space?

Not according to the nine cloud and CDN providers whose published range lists we track. That is a statement about those specific lists, not proof the space is residential — plenty of hosting companies never publish machine-readable ranges, and this AS may well be one of them.

The reliable way to classify a specific address is to check it directly rather than to infer from the AS. The free lookup tool returns live tunnel and datacenter signals for any address.

What an AS number does and does not tell you

An autonomous system number identifies who announces a block of addresses to the internet's routing table. It is an organisational fact, and a durable one — useful for attributing traffic to a hosting company, a carrier, or a university.

It is not a risk signal. A residential ISP's AS carries the household traffic of millions of ordinary customers and, at the same time, whatever residential proxy exits have been installed on those customers' devices. A hosting AS carries scrapers and legitimate server-to-server integrations in the same ranges. Scoring an address on the reputation of its AS produces exactly the false positives that make fraud tooling untrustworthy.

Sentinel does not feed AS names or routing data into its risk score. Tunnel detection comes from live network intelligence, and the dch signal comes from provider-published ranges. This directory exists to answer "who announces this address," which is a different and genuinely useful question.

Announced IPv4 ranges

First 100 of 317 ranges.

Range startRange endAddresses
1.203.94.01.203.95.255512
1.203.115.01.203.115.255256
1.203.124.01.203.127.2551,024
36.110.128.036.110.186.25515,104
36.110.187.036.110.192.2551,536
36.110.193.036.110.212.2555,120
36.110.214.036.110.215.255512
36.110.217.036.110.227.2552,816
36.110.228.036.110.233.2551,536
36.110.236.036.110.255.2555,120
36.111.80.036.111.81.255512
36.111.88.036.111.88.255256
36.111.148.036.111.149.255512
36.112.128.036.112.139.2553,072
36.112.142.036.112.143.255512
36.112.145.036.112.150.2551,536
36.112.154.036.112.159.2551,536
36.112.168.036.112.169.255512
36.112.235.036.112.235.255256
42.62.0.042.62.127.25532,768
42.158.0.042.158.255.25565,536
43.231.160.043.231.163.2551,024
43.231.167.043.231.170.2551,024
43.243.232.043.243.235.2551,024
43.247.176.043.247.191.2554,096
45.254.64.045.254.79.2554,096
49.4.32.049.4.47.2554,096
49.4.128.049.4.131.2551,024
49.7.0.049.7.48.25512,544
49.7.49.049.7.99.25513,056
49.7.100.049.7.182.25521,248
49.7.183.049.7.217.2558,960
49.7.218.049.7.220.255768
49.7.221.049.7.225.2551,280
49.7.226.049.7.227.255512
49.7.228.049.7.255.2557,168
61.4.80.061.4.81.255512
101.36.64.0101.36.79.2554,096
101.124.0.0101.124.15.2554,096
101.124.19.0101.124.19.255256
101.124.22.0101.124.22.255256
101.124.62.0101.124.62.255256
101.198.0.0101.198.4.2551,280
101.236.80.0101.236.255.25545,056
101.237.33.0101.237.40.2552,048
101.237.128.0101.237.143.2554,096
101.251.204.0101.251.223.2555,120
101.254.0.0101.254.15.2554,096
101.254.32.0101.254.98.25517,152
101.254.100.0101.254.255.25539,936
103.15.96.0103.15.99.2551,024
103.17.40.0103.17.43.2551,024
103.26.0.0103.26.3.2551,024
103.26.64.0103.26.65.255512
103.28.8.0103.28.8.255256
103.37.73.0103.37.75.255768
103.70.8.0103.70.11.2551,024
103.74.24.0103.74.31.2552,048
103.74.48.0103.74.51.2551,024
103.102.200.0103.102.203.2551,024
103.107.216.0103.107.223.2552,048
103.149.242.0103.149.242.255256
103.227.122.0103.227.123.255512
103.231.68.0103.231.69.255512
103.231.71.0103.231.71.255256
103.235.85.0103.235.85.255256
103.235.232.0103.235.239.2552,048
103.235.251.0103.235.255.2551,280
103.242.172.0103.242.175.2551,024
103.244.80.0103.244.83.2551,024
103.244.232.0103.244.235.2551,024
103.247.168.0103.247.171.2551,024
103.254.188.0103.254.191.2551,024
106.0.6.0106.0.7.255512
106.2.128.0106.2.157.2557,680
106.3.0.0106.3.47.25512,288
106.3.80.0106.3.83.2551,024
106.3.88.0106.3.95.2552,048
106.3.128.0106.3.138.2552,816
106.3.140.0106.3.143.2551,024
106.3.152.0106.3.159.2552,048
106.3.192.0106.3.207.2554,096
106.13.244.0106.13.249.2551,536
106.37.0.0106.37.49.25512,800
106.37.56.0106.37.57.255512
106.37.72.0106.37.75.2551,024
106.38.128.0106.38.139.2553,072
106.38.176.0106.38.182.2551,792
106.38.183.0106.38.189.2551,792
106.38.191.0106.38.211.2555,376
106.38.212.0106.38.222.2552,816
106.38.223.0106.38.252.2557,680
106.38.253.0106.38.255.255768
106.39.160.0106.39.164.2551,280
106.39.165.0106.39.218.25513,824
106.39.220.0106.39.255.2559,216
106.63.3.0106.63.10.2552,048
106.120.144.0106.120.153.2552,560
106.120.154.0106.120.159.2551,536
106.120.161.0106.120.172.2553,072

Check a specific address

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