Network · AS38903

AS38903 Australian Unity Limited

AS38903 (Australian Unity Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS38903

OwnerAustralian Unity Limited
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,536
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

203.99.152.0/22
103.131.83.0/24
103.122.123.0/24

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

Check an IP address →

Detect it in code

Spot AS38903 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 AS38903

Is AS38903 a datacenter or VPN network?

AS38903 (Australian Unity Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS38903?

AS38903 is registered to Australian Unity Limited. It announces about 1,536 IPv4 addresses.

How do I detect traffic from AS38903?

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.