Network · AS31251

AS31251 Falco IPR BV

AS31251 (Falco IPR BV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS31251

OwnerFalco IPR BV
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,792
IPv4 ranges4
IPv6 ranges6

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

85.203.0.0/22
85.203.6.0/24
85.203.5.0/24
85.203.12.0/24

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

Check an IP address →

Detect it in code

Spot AS31251 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 AS31251

Is AS31251 a datacenter or VPN network?

AS31251 (Falco IPR BV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS31251?

AS31251 is registered to Falco IPR BV. It announces about 1,792 IPv4 addresses.

How do I detect traffic from AS31251?

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.