Network · AS203964

AS203964 4Tel Telekomunikacije d.o.o.

AS203964 (4Tel Telekomunikacije d.o.o.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS203964

Owner4Tel Telekomunikacije d.o.o.
KindInternet service provider
Servers, not peopleno
IPv4 addresses8,960
IPv4 ranges24
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

80.253.164.0/22
185.168.40.0/22
185.150.232.0/22
213.190.26.0/23
142.252.204.0/23
82.29.224.0/24
82.29.222.0/24
82.29.219.0/24
82.29.212.0/24
82.27.219.0/24
82.26.213.0/24
82.25.231.0/24

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

Check an IP address →

Detect it in code

Spot AS203964 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 AS203964

Is AS203964 a datacenter or VPN network?

AS203964 (4Tel Telekomunikacije d.o.o.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS203964?

AS203964 is registered to 4Tel Telekomunikacije d.o.o.. It announces about 8,960 IPv4 addresses.

How do I detect traffic from AS203964?

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.