Network · AS21624

AS21624 Wisconsin CyberLynk Network, Inc.

AS21624 (Wisconsin CyberLynk Network, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21624

OwnerWisconsin CyberLynk Network, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses4,096
IPv4 ranges3
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

38.22.0.0/21
162.255.20.0/22
162.253.132.0/22

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

Check an IP address →

Detect it in code

Spot AS21624 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 AS21624

Is AS21624 a datacenter or VPN network?

AS21624 (Wisconsin CyberLynk Network, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21624?

AS21624 is registered to Wisconsin CyberLynk Network, Inc.. It announces about 4,096 IPv4 addresses.

How do I detect traffic from AS21624?

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.