Network · AS31317

AS31317 AnschlussWerk GmbH

AS31317 (AnschlussWerk GmbH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS31317

  • OwnerAnschlussWerk GmbH
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses26,112
  • IPv4 ranges16
  • IPv6 ranges8
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 46.253.64.0/20
  • 37.251.224.0/20
  • 31.209.160.0/20
  • 195.192.192.0/20
  • 31.220.112.0/21
  • 45.119.124.0/22
  • 185.95.112.0/22
  • 185.178.56.0/22
  • 185.170.244.0/22
  • 185.156.28.0/22
  • 185.114.140.0/22
  • 80.224.236.0/23

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

Check an IP address →

Detect it in code

Spot AS31317 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 AS31317

Is AS31317 a datacenter or VPN network?

AS31317 (AnschlussWerk GmbH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS31317?

AS31317 is registered to AnschlussWerk GmbH. It announces about 26,112 IPv4 addresses.

How do I detect traffic from AS31317?

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.