Network · AS20633

AS20633 Johann Wolfgang Goethe-Universitat Frankfurt am Main

AS20633 (Johann Wolfgang Goethe-Universitat Frankfurt am Main) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS20633

  • OwnerJohann Wolfgang Goethe-Universitat Fra
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses66,560
  • IPv4 ranges2
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 141.2.0.0/16
  • 185.193.228.0/22

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

Check an IP address →

Detect it in code

Spot AS20633 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 AS20633

Is AS20633 a datacenter or VPN network?

AS20633 (Johann Wolfgang Goethe-Universitat Frankfurt am Main) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS20633?

AS20633 is registered to Johann Wolfgang Goethe-Universitat Frankfurt am Main. It announces about 66,560 IPv4 addresses.

How do I detect traffic from AS20633?

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.