Network · AS12311

AS12311 International Atomic Energy Agency

AS12311 (International Atomic Energy Agency) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS12311

OwnerInternational Atomic Energy Agency
KindInternet service provider
Servers, not peopleno
IPv4 addresses65,536
IPv4 ranges9
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

161.5.128.0/17
161.5.64.0/18
161.5.0.0/19
161.5.48.0/20
161.5.40.0/21
161.5.36.0/22
161.5.34.0/23
161.5.33.0/24
130.0.70.0/24

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

Check an IP address →

Detect it in code

Spot AS12311 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 AS12311

Is AS12311 a datacenter or VPN network?

AS12311 (International Atomic Energy Agency) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS12311?

AS12311 is registered to International Atomic Energy Agency. It announces about 65,536 IPv4 addresses.

How do I detect traffic from AS12311?

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.