Network · AS51159

AS51159 CT1 Technologies Ltd

AS51159 (CT1 Technologies Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51159

OwnerCT1 Technologies Ltd
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,304
IPv4 ranges5
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

185.62.84.0/22
91.239.124.0/23
91.228.115.0/24
91.142.134.0/24
194.187.252.0/24

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

Check an IP address →

Detect it in code

Spot AS51159 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 AS51159

Is AS51159 a datacenter or VPN network?

AS51159 (CT1 Technologies Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51159?

AS51159 is registered to CT1 Technologies Ltd. It announces about 2,304 IPv4 addresses.

How do I detect traffic from AS51159?

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.