Network · AS42687

AS42687 Izarlink SAS

AS42687 (Izarlink SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS42687

OwnerIzarlink SAS
KindInternet service provider
Servers, not peopleno
IPv4 addresses6,400
IPv4 ranges6
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

161.104.8.0/21
193.142.128.0/22
185.219.240.0/22
185.203.176.0/22
185.182.168.0/22
185.217.141.0/24

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

Check an IP address →

Detect it in code

Spot AS42687 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 AS42687

Is AS42687 a datacenter or VPN network?

AS42687 (Izarlink SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS42687?

AS42687 is registered to Izarlink SAS. It announces about 6,400 IPv4 addresses.

How do I detect traffic from AS42687?

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.