Network check
ASN
AS21502
- OwnerSociete Francaise Du Radiotelephone -
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses8,192
- IPv4 ranges1
- IPv6 ranges0
Risk score0
Nothing suspicious found.
Network · AS21502
AS21502 Societe Francaise Du Radiotelephone - SFR SA
AS21502 (Societe Francaise Du Radiotelephone - SFR SA) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Detect it in code
Spot AS21502 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 AS21502
Is AS21502 a datacenter or VPN network?
AS21502 (Societe Francaise Du Radiotelephone - SFR SA) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Who owns AS21502?
AS21502 is registered to Societe Francaise Du Radiotelephone - SFR SA. It announces about 8,192 IPv4 addresses.
How do I detect traffic from AS21502?
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.