Network · AS25409

AS25409 Alsys Net SRL

AS25409 (Alsys Net SRL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS25409

OwnerAlsys Net SRL
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,816
IPv4 ranges3
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

93.190.144.0/21
95.128.170.0/23
195.234.188.0/24

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

Check an IP address →

Detect it in code

Spot AS25409 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 AS25409

Is AS25409 a datacenter or VPN network?

AS25409 (Alsys Net SRL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS25409?

AS25409 is registered to Alsys Net SRL. It announces about 2,816 IPv4 addresses.

How do I detect traffic from AS25409?

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.