Network · AS44103

AS44103 The Mastermind Holding B.V.

AS44103 (The Mastermind Holding B.V.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS44103

OwnerThe Mastermind Holding B.V.
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges8
IPv6 ranges161

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

178.18.154.0/23
103.163.186.0/23
77.90.23.0/24
45.93.119.0/24
45.139.163.0/24
185.249.217.0/24
185.150.96.0/24
178.218.145.0/24

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

Check an IP address →

Detect it in code

Spot AS44103 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 AS44103

Is AS44103 a datacenter or VPN network?

AS44103 (The Mastermind Holding B.V.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS44103?

AS44103 is registered to The Mastermind Holding B.V.. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS44103?

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.