Network check
ASN
AS13303
- OwnerUniversity of Nis
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses65,536
- IPv4 ranges1
- IPv6 ranges0
Risk score0
Nothing suspicious found.
Network · AS13303
AS13303 University of Nis
AS13303 (University of Nis) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Detect it in code
Spot AS13303 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 AS13303
Is AS13303 a datacenter or VPN network?
AS13303 (University of Nis) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Who owns AS13303?
AS13303 is registered to University of Nis. It announces about 65,536 IPv4 addresses.
How do I detect traffic from AS13303?
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.