Network · AS21000

AS21000 Atos France SAS

AS21000 (Atos France SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21000

OwnerAtos France SAS
KindInternet service provider
Servers, not peopleno
IPv4 addresses9,216
IPv4 ranges6
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

80.78.0.0/20
129.185.224.0/20
193.56.241.0/24
193.56.114.0/24
193.28.205.0/24
193.164.148.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS21000 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 AS21000

Is AS21000 a datacenter or VPN network?

AS21000 (Atos France SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21000?

AS21000 is registered to Atos France SAS. It announces about 9,216 IPv4 addresses.

How do I detect traffic from AS21000?

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.