Network · AS2505

AS2505 High Energy Accelerator Research Organization, KEK

AS2505 (High Energy Accelerator Research Organization, KEK) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS2505

  • OwnerHigh Energy Accelerator Research Organ
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses74,240
  • IPv4 ranges4
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 130.87.0.0/16
  • 202.13.192.0/19
  • 192.153.114.0/24
  • 192.153.112.0/24

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

Check an IP address →

Detect it in code

Spot AS2505 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 AS2505

Is AS2505 a datacenter or VPN network?

AS2505 (High Energy Accelerator Research Organization, KEK) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS2505?

AS2505 is registered to High Energy Accelerator Research Organization, KEK. It announces about 74,240 IPv4 addresses.

How do I detect traffic from AS2505?

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.