Network · AS14921

AS14921 CenturyLink Communications, LLC

AS14921 (CenturyLink Communications, LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS14921

OwnerCenturyLink Communications, LLC
KindInternet service provider
Servers, not peopleno
IPv4 addresses61,440
IPv4 ranges31
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

76.2.0.0/19
67.237.224.0/19
71.53.64.0/20
71.50.0.0/20
67.237.96.0/20
74.4.176.0/21
71.48.176.0/21
71.1.128.0/21
71.0.48.0/21
67.76.144.0/21
67.237.136.0/21
67.232.160.0/21

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

Check an IP address →

Detect it in code

Spot AS14921 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 AS14921

Is AS14921 a datacenter or VPN network?

AS14921 (CenturyLink Communications, LLC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS14921?

AS14921 is registered to CenturyLink Communications, LLC. It announces about 61,440 IPv4 addresses.

How do I detect traffic from AS14921?

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.