Network · AS18323

AS18323 Seoul National University Bundang Hospital

AS18323 (Seoul National University Bundang Hospital) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18323

OwnerSeoul National University Bundang Hosp
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,792
IPv4 ranges7
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

222.235.80.0/24
221.163.32.0/24
211.253.251.0/24
210.103.57.0/24
210.103.53.0/24
125.132.205.0/24
125.132.159.0/24

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

Check an IP address →

Detect it in code

Spot AS18323 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 AS18323

Is AS18323 a datacenter or VPN network?

AS18323 (Seoul National University Bundang Hospital) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18323?

AS18323 is registered to Seoul National University Bundang Hospital. It announces about 1,792 IPv4 addresses.

How do I detect traffic from AS18323?

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.