Network · AS4531

AS4531 Nexsys Electronics, Inc.

AS4531 (Nexsys Electronics, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS4531

OwnerNexsys Electronics, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses64,256
IPv4 ranges7
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

169.131.128.0/17
169.131.64.0/18
169.131.0.0/19
169.131.32.0/20
169.131.56.0/21
169.131.54.0/23
169.131.53.0/24

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

Check an IP address →

Detect it in code

Spot AS4531 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 AS4531

Is AS4531 a datacenter or VPN network?

AS4531 (Nexsys Electronics, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS4531?

AS4531 is registered to Nexsys Electronics, Inc.. It announces about 64,256 IPv4 addresses.

How do I detect traffic from AS4531?

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.