Network · AS11203

AS11203 Matrix Broadband

AS11203 (Matrix Broadband) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS11203

OwnerMatrix Broadband
KindInternet service provider
Servers, not peopleno
IPv4 addresses4,352
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

38.51.112.0/21
192.0.8.0/21
192.209.0.0/24

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

Check an IP address →

Detect it in code

Spot AS11203 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 AS11203

Is AS11203 a datacenter or VPN network?

AS11203 (Matrix Broadband) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS11203?

AS11203 is registered to Matrix Broadband. It announces about 4,352 IPv4 addresses.

How do I detect traffic from AS11203?

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.