Network check
ASN
AS21506
- OwnerFundação Universidade de Brasília
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses65,536
- IPv4 ranges1
- IPv6 ranges1
Risk score0
Nothing suspicious found.
Network · AS21506
AS21506 Fundação Universidade de Brasília
AS21506 (Fundação Universidade de Brasília) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Detect it in code
Spot AS21506 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 AS21506
Is AS21506 a datacenter or VPN network?
AS21506 (Fundação Universidade de Brasília) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Who owns AS21506?
AS21506 is registered to Fundação Universidade de Brasília. It announces about 65,536 IPv4 addresses.
How do I detect traffic from AS21506?
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.