Network · AS5432

AS5432 Proximus NV

AS5432 (Proximus NV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS5432

OwnerProximus NV
KindInternet service provider
Servers, not peopleno
IPv4 addresses3,917,056
IPv4 ranges38
IPv6 ranges3

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

109.128.0.0/12
91.176.0.0/13
81.240.0.0/13
87.64.0.0/14
80.200.0.0/15
46.178.0.0/15
37.184.0.0/15
178.144.0.0/15
83.134.0.0/16
62.235.0.0/16
37.62.0.0/16
217.136.0.0/16

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

Check an IP address →

Detect it in code

Spot AS5432 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 AS5432

Is AS5432 a datacenter or VPN network?

AS5432 (Proximus NV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS5432?

AS5432 is registered to Proximus NV. It announces about 3,917,056 IPv4 addresses.

How do I detect traffic from AS5432?

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.