Network · AS16205

AS16205 DSI GmbH Daten Service Informationssysteme

AS16205 (DSI GmbH Daten Service Informationssysteme) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS16205

  • OwnerDSI GmbH Daten Service Informationssys
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses16,384
  • IPv4 ranges10
  • IPv6 ranges2
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 81.201.144.0/20
  • 217.18.176.0/20
  • 31.210.160.0/21
  • 178.249.24.0/21
  • 176.52.200.0/21
  • 185.75.184.0/22
  • 194.31.246.0/24
  • 194.180.239.0/24
  • 194.113.71.0/24
  • 192.109.108.0/24

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

Check an IP address →

Detect it in code

Spot AS16205 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 AS16205

Is AS16205 a datacenter or VPN network?

AS16205 (DSI GmbH Daten Service Informationssysteme) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS16205?

AS16205 is registered to DSI GmbH Daten Service Informationssysteme. It announces about 16,384 IPv4 addresses.

How do I detect traffic from AS16205?

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.