Network · AS131100

AS131100 Korea Internet Security Agency

AS131100 (Korea Internet Security Agency) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS131100

OwnerKorea Internet Security Agency
KindInternet service provider
Servers, not peopleno
IPv4 addresses768
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

210.101.62.0/23
1.18.119.0/24

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

Check an IP address →

Detect it in code

Spot AS131100 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 AS131100

Is AS131100 a datacenter or VPN network?

AS131100 (Korea Internet Security Agency) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS131100?

AS131100 is registered to Korea Internet Security Agency. It announces about 768 IPv4 addresses.

How do I detect traffic from AS131100?

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.