Network · AS4837

AS4837 CHINA UNICOM China169 Backbone

AS4837 (CHINA UNICOM China169 Backbone) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS4837

OwnerCHINA UNICOM China169 Backbone
KindInternet service provider
Servers, not peopleno
IPv4 addresses56,900,772
IPv4 ranges1,377
IPv6 ranges724

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

39.64.0.0/11
27.192.0.0/11
60.208.0.0/12
42.224.0.0/12
182.112.0.0/12
175.160.0.0/12
120.0.0.0/12
119.176.0.0/12
115.48.0.0/12
113.224.0.0/12
112.240.0.0/12
110.240.0.0/12

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

Check an IP address →

Detect it in code

Spot AS4837 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 AS4837

Is AS4837 a datacenter or VPN network?

AS4837 (CHINA UNICOM China169 Backbone) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS4837?

AS4837 is registered to CHINA UNICOM China169 Backbone. It announces about 56,900,772 IPv4 addresses.

How do I detect traffic from AS4837?

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.