Network · AS205046

AS205046 FZI Forschungszentrum Informatik

AS205046 (FZI Forschungszentrum Informatik) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS205046

OwnerFZI Forschungszentrum Informatik
KindInternet service provider
Servers, not peopleno
IPv4 addresses66,560
IPv4 ranges2
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

141.21.0.0/16
185.231.132.0/22

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

Check an IP address →

Detect it in code

Spot AS205046 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 AS205046

Is AS205046 a datacenter or VPN network?

AS205046 (FZI Forschungszentrum Informatik) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS205046?

AS205046 is registered to FZI Forschungszentrum Informatik. It announces about 66,560 IPv4 addresses.

How do I detect traffic from AS205046?

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.