Network · AS18043

AS18043 Department of Education, Hsinchu City

AS18043 (Department of Education, Hsinchu City) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18043

  • OwnerDepartment of Education, Hsinchu City
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses35,584
  • IPv4 ranges10
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 120.104.64.0/19
  • 120.104.0.0/19
  • 163.19.128.0/20
  • 163.19.112.0/20
  • 120.104.96.0/20
  • 163.19.144.0/21
  • 163.19.104.0/21
  • 120.104.32.0/21
  • 144.79.66.0/23
  • 163.28.69.0/24

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

Check an IP address →

Detect it in code

Spot AS18043 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 AS18043

Is AS18043 a datacenter or VPN network?

AS18043 (Department of Education, Hsinchu City) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18043?

AS18043 is registered to Department of Education, Hsinchu City. It announces about 35,584 IPv4 addresses.

How do I detect traffic from AS18043?

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.