Network · AS9551

AS9551 King Mongkut's University of Technology Thonburi

AS9551 (King Mongkut's University of Technology Thonburi) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS9551

  • OwnerKing Mongkut's University of Technolog
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses3,328
  • IPv4 ranges3
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 202.44.8.0/21
  • 202.28.4.0/22
  • 49.231.233.0/24

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

Check an IP address →

Detect it in code

Spot AS9551 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 AS9551

Is AS9551 a datacenter or VPN network?

AS9551 (King Mongkut's University of Technology Thonburi) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS9551?

AS9551 is registered to King Mongkut's University of Technology Thonburi. It announces about 3,328 IPv4 addresses.

How do I detect traffic from AS9551?

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.