Network · AS11572

AS11572 PhoenixNAP LLC

AS11572 (PhoenixNAP LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS11572

  • OwnerPhoenixNAP LLC
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses9,984
  • IPv4 ranges14
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 131.153.24.0/21
  • 206.232.0.0/22
  • 204.217.128.0/22
  • 142.228.40.0/22
  • 142.228.4.0/22
  • 131.153.132.0/22
  • 63.214.166.0/23
  • 131.153.66.0/23
  • 131.153.152.0/23
  • 64.38.250.0/24
  • 64.38.249.0/24
  • 131.153.82.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS11572 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 AS11572

Is AS11572 a datacenter or VPN network?

AS11572 (PhoenixNAP LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS11572?

AS11572 is registered to PhoenixNAP LLC. It announces about 9,984 IPv4 addresses.

How do I detect traffic from AS11572?

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.