Network · AS17551

AS17551 ANYCAST HOLDINGS PTY LTD

AS17551 (ANYCAST HOLDINGS PTY LTD) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17551

  • OwnerANYCAST HOLDINGS PTY LTD
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses31,744
  • IPv4 ranges30
  • IPv6 ranges3
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 123.50.128.0/20
  • 117.53.128.0/20
  • 203.147.96.0/21
  • 125.254.120.0/21
  • 125.214.80.0/21
  • 110.232.240.0/21
  • 210.56.224.0/22
  • 203.83.4.0/22
  • 202.47.120.0/22
  • 14.192.56.0/22
  • 125.254.116.0/22
  • 125.254.108.0/22

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

Check an IP address →

Detect it in code

Spot AS17551 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 AS17551

Is AS17551 a datacenter or VPN network?

AS17551 (ANYCAST HOLDINGS PTY LTD) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17551?

AS17551 is registered to ANYCAST HOLDINGS PTY LTD. It announces about 31,744 IPv4 addresses.

How do I detect traffic from AS17551?

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.