Network · AS154356

AS154356 NEXT SYSTEM

AS154356 (NEXT SYSTEM) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS154356

  • OwnerNEXT SYSTEM
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses512
  • IPv4 ranges1
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 138.252.186.0/23

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

Check an IP address →

Detect it in code

Spot AS154356 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 AS154356

Is AS154356 a datacenter or VPN network?

AS154356 (NEXT SYSTEM) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS154356?

AS154356 is registered to NEXT SYSTEM. It announces about 512 IPv4 addresses.

How do I detect traffic from AS154356?

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.