Network · AS25504

AS25504 Vautron Rechenzentrum AG

AS25504 (Vautron Rechenzentrum AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS25504

OwnerVautron Rechenzentrum AG
KindInternet service provider
Servers, not peopleno
IPv4 addresses26,624
IPv4 ranges18
IPv6 ranges3

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

94.102.208.0/20
151.252.48.0/20
89.200.168.0/21
83.243.56.0/21
46.175.56.0/21
46.151.160.0/21
193.254.184.0/21
158.58.144.0/21
109.235.56.0/21
185.90.232.0/22
91.247.144.0/23
91.233.26.0/23

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

Check an IP address →

Detect it in code

Spot AS25504 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 AS25504

Is AS25504 a datacenter or VPN network?

AS25504 (Vautron Rechenzentrum AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS25504?

AS25504 is registered to Vautron Rechenzentrum AG. It announces about 26,624 IPv4 addresses.

How do I detect traffic from AS25504?

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.