Network · AS17756

AS17756 Australian Postal Corporation

AS17756 (Australian Postal Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17756

OwnerAustralian Postal Corporation
KindInternet service provider
Servers, not peopleno
IPv4 addresses63,232
IPv4 ranges14
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

155.144.64.0/18
155.144.192.0/18
155.144.160.0/19
155.144.0.0/19
155.144.32.0/20
155.144.128.0/20
155.144.152.0/21
155.144.48.0/22
155.144.148.0/22
155.144.52.0/23
155.144.146.0/23
203.171.5.0/24

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

Check an IP address →

Detect it in code

Spot AS17756 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 AS17756

Is AS17756 a datacenter or VPN network?

AS17756 (Australian Postal Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17756?

AS17756 is registered to Australian Postal Corporation. It announces about 63,232 IPv4 addresses.

How do I detect traffic from AS17756?

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.