Network · AS17518

AS17518 Shiojiri City

AS17518 (Shiojiri City) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17518

  • OwnerShiojiri City
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses8,192
  • IPv4 ranges1
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 203.141.192.0/19

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

Check an IP address →

Detect it in code

Spot AS17518 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 AS17518

Is AS17518 a datacenter or VPN network?

AS17518 (Shiojiri City) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17518?

AS17518 is registered to Shiojiri City. It announces about 8,192 IPv4 addresses.

How do I detect traffic from AS17518?

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.