Network · AS3363

AS3363 Hong Kong University of Science and Technology

AS3363 (Hong Kong University of Science and Technology) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS3363

  • OwnerHong Kong University of Science and Te
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses79,616
  • IPv4 ranges7
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 143.89.0.0/16
  • 175.159.96.0/19
  • 203.188.104.0/21
  • 202.125.224.0/21
  • 175.159.240.0/22
  • 202.40.138.0/23
  • 202.14.80.0/24

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

Check an IP address →

Detect it in code

Spot AS3363 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 AS3363

Is AS3363 a datacenter or VPN network?

AS3363 (Hong Kong University of Science and Technology) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS3363?

AS3363 is registered to Hong Kong University of Science and Technology. It announces about 79,616 IPv4 addresses.

How do I detect traffic from AS3363?

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.