Network · AS21728

AS21728 AVADirect Custom Computers

AS21728 (AVADirect Custom Computers) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21728

  • OwnerAVADirect Custom Computers
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses256
  • IPv4 ranges1
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 23.187.24.0/24

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

Check an IP address →

Detect it in code

Spot AS21728 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 AS21728

Is AS21728 a datacenter or VPN network?

AS21728 (AVADirect Custom Computers) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21728?

AS21728 is registered to AVADirect Custom Computers. It announces about 256 IPv4 addresses.

How do I detect traffic from AS21728?

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.