Network · AS203536

AS203536 FNOH DSL Suedheide GmbH

AS203536 (FNOH DSL Suedheide GmbH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS203536

OwnerFNOH DSL Suedheide GmbH
KindInternet service provider
Servers, not peopleno
IPv4 addresses5,632
IPv4 ranges6
IPv6 ranges3

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

46.167.8.0/21
92.118.120.0/22
185.63.8.0/22
194.59.32.0/23
194.59.14.0/23
188.116.42.0/23

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

Check an IP address →

Detect it in code

Spot AS203536 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 AS203536

Is AS203536 a datacenter or VPN network?

AS203536 (FNOH DSL Suedheide GmbH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS203536?

AS203536 is registered to FNOH DSL Suedheide GmbH. It announces about 5,632 IPv4 addresses.

How do I detect traffic from AS203536?

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.