Network · AS23724

AS23724 IDC, China Telecommunications Corporation

AS23724 (IDC, China Telecommunications Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS23724

OwnerIDC, China Telecommunications Corporat
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,951,232
IPv4 ranges486
IPv6 ranges16

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

49.7.0.0/16
42.158.0.0/16
221.122.0.0/16
123.59.0.0/16
115.102.0.0/16
114.64.0.0/16
42.62.0.0/17
221.123.128.0/17
220.181.0.0/17
183.84.128.0/17
120.135.128.0/17
119.61.0.0/17

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.

Check an IP address →

Detect it in code

Spot AS23724 traffic at signup.

Send the visitor's IP. The response includes the ASN, the owner and flags.hosting.

curl https://veqen-app.com/v1/ip/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip": "203.0.113.7"}'

import os, requests

r = requests.post(
    "https://veqen-app.com/v1/ip/check",
    headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
    json={"ip": "203.0.113.7"},
    timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])

const res = await fetch("https://veqen-app.com/v1/ip/check", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"ip": "203.0.113.7"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);

Questions

About AS23724

Is AS23724 a datacenter or VPN network?

AS23724 (IDC, China Telecommunications Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS23724?

AS23724 is registered to IDC, China Telecommunications Corporation. It announces about 1,951,232 IPv4 addresses.

How do I detect traffic from AS23724?

Call the Veqen IP check with the visitor's address. The response includes the ASN, the owner and whether the network is a datacenter, VPN network, relay or ISP.