Network · AS16531

AS16531 TOPNET SA de CV

AS16531 (TOPNET SA de CV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS16531

OwnerTOPNET SA de CV
KindInternet service provider
Servers, not peopleno
IPv4 addresses6,400
IPv4 ranges10
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

200.76.104.0/21
200.52.128.0/21
200.52.138.0/23
200.76.98.0/24
200.76.96.0/24
200.76.126.0/24
200.76.125.0/24
200.76.101.0/24
200.52.143.0/24
200.52.136.0/24

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

Check an IP address →

Detect it in code

Spot AS16531 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 AS16531

Is AS16531 a datacenter or VPN network?

AS16531 (TOPNET SA de CV) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS16531?

AS16531 is registered to TOPNET SA de CV. It announces about 6,400 IPv4 addresses.

How do I detect traffic from AS16531?

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.