Network · AS20539

AS20539 Technical Centre Radio Systems Ltd.

AS20539 (Technical Centre Radio Systems Ltd.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS20539

OwnerTechnical Centre Radio Systems Ltd.
KindInternet service provider
Servers, not peopleno
IPv4 addresses12,800
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

31.135.128.0/19
94.199.160.0/21
91.201.224.0/22
194.146.228.0/22
193.178.228.0/23

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

Check an IP address →

Detect it in code

Spot AS20539 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 AS20539

Is AS20539 a datacenter or VPN network?

AS20539 (Technical Centre Radio Systems Ltd.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS20539?

AS20539 is registered to Technical Centre Radio Systems Ltd.. It announces about 12,800 IPv4 addresses.

How do I detect traffic from AS20539?

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.