Network · AS139203

AS139203 China Telecom

AS139203 (China Telecom) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS139203

OwnerChina Telecom
KindInternet service provider
Servers, not peopleno
IPv4 addresses36,352
IPv4 ranges14
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

119.0.64.0/19
111.124.192.0/19
58.42.48.0/20
111.124.64.0/20
58.42.8.0/21
111.123.56.0/21
106.108.88.0/21
106.108.72.0/21
106.108.56.0/21
111.123.54.0/23
58.42.5.0/24
58.42.2.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS139203 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 AS139203

Is AS139203 a datacenter or VPN network?

AS139203 (China Telecom) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS139203?

AS139203 is registered to China Telecom. It announces about 36,352 IPv4 addresses.

How do I detect traffic from AS139203?

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.