Network · AS30528

AS30528 E. I. Catalyst

AS30528 (E. I. Catalyst) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS30528

OwnerE. I. Catalyst
KindInternet service provider
Servers, not peopleno
IPv4 addresses8,448
IPv4 ranges3
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

72.0.64.0/20
66.96.16.0/20
205.189.139.0/24

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

Check an IP address →

Detect it in code

Spot AS30528 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 AS30528

Is AS30528 a datacenter or VPN network?

AS30528 (E. I. Catalyst) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS30528?

AS30528 is registered to E. I. Catalyst. It announces about 8,448 IPv4 addresses.

How do I detect traffic from AS30528?

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.