Network · AS12171

AS12171 Fast Enterprises, LLC

AS12171 (Fast Enterprises, LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS12171

OwnerFast Enterprises, LLC
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges6
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

170.10.100.0/22
170.10.96.0/23
170.10.99.0/24
170.10.108.0/24
170.10.106.0/24
170.10.104.0/24

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

Check an IP address →

Detect it in code

Spot AS12171 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 AS12171

Is AS12171 a datacenter or VPN network?

AS12171 (Fast Enterprises, LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS12171?

AS12171 is registered to Fast Enterprises, LLC. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS12171?

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.