Network · AS18183

AS18183 National Center for Research on Earthquake Engineering

AS18183 (National Center for Research on Earthquake Engineering) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18183

  • OwnerNational Center for Research on Earthq
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses5,632
  • IPv4 ranges3
  • IPv6 ranges2
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 61.56.0.0/20
  • 202.5.12.0/22
  • 103.189.132.0/23

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

Check an IP address →

Detect it in code

Spot AS18183 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 AS18183

Is AS18183 a datacenter or VPN network?

AS18183 (National Center for Research on Earthquake Engineering) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18183?

AS18183 is registered to National Center for Research on Earthquake Engineering. It announces about 5,632 IPv4 addresses.

How do I detect traffic from AS18183?

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.