Network · AS25581

AS25581 GMG AG

AS25581 (GMG AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS25581

OwnerGMG AG
KindInternet service provider
Servers, not peopleno
IPv4 addresses5,120
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

185.170.216.0/21
45.81.12.0/22
185.34.148.0/22
91.224.94.0/23
91.207.130.0/23

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

Check an IP address →

Detect it in code

Spot AS25581 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 AS25581

Is AS25581 a datacenter or VPN network?

AS25581 (GMG AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS25581?

AS25581 is registered to GMG AG. It announces about 5,120 IPv4 addresses.

How do I detect traffic from AS25581?

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.