Network · AS17687

AS17687 National University Corporation Nagoya University

AS17687 (National University Corporation Nagoya University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17687

OwnerNational University Corporation Nagoya
KindInternet service provider
Servers, not peopleno
IPv4 addresses131,328
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

133.6.0.0/16
133.47.0.0/16
192.50.56.0/24

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

Check an IP address →

Detect it in code

Spot AS17687 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 AS17687

Is AS17687 a datacenter or VPN network?

AS17687 (National University Corporation Nagoya University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17687?

AS17687 is registered to National University Corporation Nagoya University. It announces about 131,328 IPv4 addresses.

How do I detect traffic from AS17687?

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.