Network · AS56665

AS56665 Proximus Luxembourg S.A.

AS56665 (Proximus Luxembourg S.A.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS56665

OwnerProximus Luxembourg S.A.
KindInternet service provider
Servers, not peopleno
IPv4 addresses45,056
IPv4 ranges8
IPv6 ranges4

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

94.252.0.0/17
212.66.64.0/19
31.204.92.0/22
185.40.60.0/22
185.3.44.0/22
31.204.90.0/23
78.111.137.0/24
31.204.88.0/24

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

Check an IP address →

Detect it in code

Spot AS56665 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 AS56665

Is AS56665 a datacenter or VPN network?

AS56665 (Proximus Luxembourg S.A.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS56665?

AS56665 is registered to Proximus Luxembourg S.A.. It announces about 45,056 IPv4 addresses.

How do I detect traffic from AS56665?

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.