Network · AS11623

AS11623 CT Communications Network

AS11623 (CT Communications Network) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS11623

OwnerCT Communications Network
KindInternet service provider
Servers, not peopleno
IPv4 addresses8,192
IPv4 ranges2
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

67.43.192.0/20
65.75.224.0/20

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

Check an IP address →

Detect it in code

Spot AS11623 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 AS11623

Is AS11623 a datacenter or VPN network?

AS11623 (CT Communications Network) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS11623?

AS11623 is registered to CT Communications Network. It announces about 8,192 IPv4 addresses.

How do I detect traffic from AS11623?

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.