Network · AS42081

AS42081 European Centre for Medium-Range Weather Forecasts (ECMWF)

AS42081 (European Centre for Medium-Range Weather Forecasts (ECMWF)) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS42081

  • OwnerEuropean Centre for Medium-Range Weath
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses28,416
  • IPv4 ranges6
  • IPv6 ranges2
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 136.156.192.0/18
  • 136.156.128.0/19
  • 136.156.40.0/21
  • 136.156.32.0/22
  • 77.83.224.0/23
  • 77.83.226.0/24

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

Check an IP address →

Detect it in code

Spot AS42081 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 AS42081

Is AS42081 a datacenter or VPN network?

AS42081 (European Centre for Medium-Range Weather Forecasts (ECMWF)) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS42081?

AS42081 is registered to European Centre for Medium-Range Weather Forecasts (ECMWF). It announces about 28,416 IPv4 addresses.

How do I detect traffic from AS42081?

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.