Network · AS6536

AS6536 CityNet

AS6536 (CityNet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS6536

OwnerCityNet
KindInternet service provider
Servers, not peopleno
IPv4 addresses36,608
IPv4 ranges9
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

69.43.32.0/19
66.118.64.0/19
64.135.224.0/19
69.43.16.0/20
67.231.224.0/20
69.43.0.0/21
69.43.12.0/22
69.43.8.0/23
69.43.10.0/24

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

Check an IP address →

Detect it in code

Spot AS6536 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 AS6536

Is AS6536 a datacenter or VPN network?

AS6536 (CityNet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS6536?

AS6536 is registered to CityNet. It announces about 36,608 IPv4 addresses.

How do I detect traffic from AS6536?

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.