Network · AS37525

AS37525 Altron TMT (Pty) Ltd

AS37525 (Altron TMT (Pty) Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS37525

  • OwnerAltron TMT (Pty) Ltd
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses38,912
  • IPv4 ranges5
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 197.156.0.0/18
  • 41.87.224.0/19
  • 41.85.128.0/19
  • 105.235.160.0/20
  • 41.76.56.0/21

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

Check an IP address →

Detect it in code

Spot AS37525 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 AS37525

Is AS37525 a datacenter or VPN network?

AS37525 (Altron TMT (Pty) Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS37525?

AS37525 is registered to Altron TMT (Pty) Ltd. It announces about 38,912 IPv4 addresses.

How do I detect traffic from AS37525?

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.