Network · AS9637

AS9637 Korea Basic Science Institute

AS9637 (Korea Basic Science Institute) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS9637

  • OwnerKorea Basic Science Institute
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses4,864
  • IPv4 ranges7
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 203.253.240.0/21
  • 210.125.80.0/22
  • 210.125.86.0/23
  • 203.230.122.0/23
  • 210.110.204.0/24
  • 203.253.239.0/24
  • 203.230.121.0/24

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

Check an IP address →

Detect it in code

Spot AS9637 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 AS9637

Is AS9637 a datacenter or VPN network?

AS9637 (Korea Basic Science Institute) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS9637?

AS9637 is registered to Korea Basic Science Institute. It announces about 4,864 IPv4 addresses.

How do I detect traffic from AS9637?

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.