Network · AS21033

AS21033 ESSILOR International SAS

AS21033 (ESSILOR International SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21033

  • OwnerESSILOR International SAS
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses2,304
  • IPv4 ranges7
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 193.242.6.0/23
  • 193.242.42.0/23
  • 193.242.9.0/24
  • 193.242.5.0/24
  • 193.242.46.0/24
  • 193.242.17.0/24
  • 193.242.11.0/24

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

Check an IP address →

Detect it in code

Spot AS21033 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 AS21033

Is AS21033 a datacenter or VPN network?

AS21033 (ESSILOR International SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21033?

AS21033 is registered to ESSILOR International SAS. It announces about 2,304 IPv4 addresses.

How do I detect traffic from AS21033?

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.