Network · AS3595

AS3595 zColo

AS3595 (zColo) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS3595

OwnerzColo
KindInternet service provider
Servers, not peopleno
IPv4 addresses3,328
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

205.214.72.0/21
64.64.222.0/23
75.127.82.0/24
207.210.105.0/24
199.16.45.0/24

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

Check an IP address →

Detect it in code

Spot AS3595 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 AS3595

Is AS3595 a datacenter or VPN network?

AS3595 (zColo) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS3595?

AS3595 is registered to zColo. It announces about 3,328 IPv4 addresses.

How do I detect traffic from AS3595?

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.