Network · AS40999

AS40999 dus.net GmbH

AS40999 (dus.net GmbH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS40999

  • Ownerdus.net GmbH
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses2,048
  • IPv4 ranges2
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 83.125.8.0/22
  • 178.16.48.0/22

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

Check an IP address →

Detect it in code

Spot AS40999 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 AS40999

Is AS40999 a datacenter or VPN network?

AS40999 (dus.net GmbH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS40999?

AS40999 is registered to dus.net GmbH. It announces about 2,048 IPv4 addresses.

How do I detect traffic from AS40999?

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.