Network · AS15958

AS15958 CETIN Ltd. Belgrade

AS15958 (CETIN Ltd. Belgrade) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS15958

  • OwnerCETIN Ltd. Belgrade
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses69,632
  • IPv4 ranges26
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 109.245.64.0/18
  • 109.245.128.0/18
  • 109.245.224.0/19
  • 217.65.192.0/20
  • 109.245.32.0/20
  • 109.245.192.0/20
  • 109.245.0.0/20
  • 109.245.208.0/21
  • 109.245.16.0/21
  • 109.245.48.0/22
  • 109.245.24.0/22
  • 109.245.220.0/22

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

Check an IP address →

Detect it in code

Spot AS15958 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 AS15958

Is AS15958 a datacenter or VPN network?

AS15958 (CETIN Ltd. Belgrade) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS15958?

AS15958 is registered to CETIN Ltd. Belgrade. It announces about 69,632 IPv4 addresses.

How do I detect traffic from AS15958?

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.