Network · AS39803

AS39803 Compania Nationala Administratia Porturilor Maritime SA Constanta

AS39803 (Compania Nationala Administratia Porturilor Maritime SA Constanta) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS39803

OwnerCompania Nationala Administratia Portu
KindInternet service provider
Servers, not peopleno
IPv4 addresses768
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

195.189.138.0/23
194.102.100.0/24

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

Check an IP address →

Detect it in code

Spot AS39803 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 AS39803

Is AS39803 a datacenter or VPN network?

AS39803 (Compania Nationala Administratia Porturilor Maritime SA Constanta) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS39803?

AS39803 is registered to Compania Nationala Administratia Porturilor Maritime SA Constanta. It announces about 768 IPv4 addresses.

How do I detect traffic from AS39803?

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.