Network · AS205664

AS205664 Vattenfall AB

AS205664 (Vattenfall AB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS205664

OwnerVattenfall AB
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

151.156.248.0/21
192.36.28.0/24
144.27.0.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS205664 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 AS205664

Is AS205664 a datacenter or VPN network?

AS205664 (Vattenfall AB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS205664?

AS205664 is registered to Vattenfall AB. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS205664?

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.