Network · AS11272

AS11272 C Spire Fiber

AS11272 (C Spire Fiber) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS11272

OwnerC Spire Fiber
KindInternet service provider
Servers, not peopleno
IPv4 addresses231,424
IPv4 ranges107
IPv6 ranges16

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

173.235.128.0/17
136.239.0.0/18
76.8.224.0/19
50.86.224.0/19
198.28.160.0/19
173.235.0.0/19
167.160.192.0/19
136.239.64.0/19
104.232.160.0/19
8.42.176.0/20
69.89.208.0/20
67.20.0.0/20

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

Check an IP address →

Detect it in code

Spot AS11272 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 AS11272

Is AS11272 a datacenter or VPN network?

AS11272 (C Spire Fiber) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS11272?

AS11272 is registered to C Spire Fiber. It announces about 231,424 IPv4 addresses.

How do I detect traffic from AS11272?

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.