Network · AS4730

AS4730 Osaka University

AS4730 (Osaka University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS4730

OwnerOsaka University
KindInternet service provider
Servers, not peopleno
IPv4 addresses67,584
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

133.1.0.0/16
192.50.0.0/21

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

Check an IP address →

Detect it in code

Spot AS4730 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 AS4730

Is AS4730 a datacenter or VPN network?

AS4730 (Osaka University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS4730?

AS4730 is registered to Osaka University. It announces about 67,584 IPv4 addresses.

How do I detect traffic from AS4730?

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.