Network · AS18331

AS18331 Daejeon Institute of Science and Technology

AS18331 (Daejeon Institute of Science and Technology) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18331

  • OwnerDaejeon Institute of Science and Techn
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses3,840
  • IPv4 ranges6
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 210.93.32.0/22
  • 203.232.148.0/22
  • 220.149.48.0/23
  • 220.149.204.0/23
  • 220.149.202.0/23
  • 220.149.206.0/24

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

Check an IP address →

Detect it in code

Spot AS18331 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 AS18331

Is AS18331 a datacenter or VPN network?

AS18331 (Daejeon Institute of Science and Technology) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18331?

AS18331 is registered to Daejeon Institute of Science and Technology. It announces about 3,840 IPv4 addresses.

How do I detect traffic from AS18331?

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.