Network · AS39543

AS39543 Tennet Telecom SRL

AS39543 (Tennet Telecom SRL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS39543

OwnerTennet Telecom SRL
KindInternet service provider
Servers, not peopleno
IPv4 addresses7,424
IPv4 ranges16
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

89.47.104.0/21
194.150.84.0/22
89.47.96.0/23
89.47.102.0/23
193.19.194.0/23
93.113.204.0/24
89.47.98.0/24
89.47.122.0/24
89.47.120.0/24
89.47.101.0/24
89.45.164.0/24
89.40.67.0/24

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

Check an IP address →

Detect it in code

Spot AS39543 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 AS39543

Is AS39543 a datacenter or VPN network?

AS39543 (Tennet Telecom SRL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS39543?

AS39543 is registered to Tennet Telecom SRL. It announces about 7,424 IPv4 addresses.

How do I detect traffic from AS39543?

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.