Network check
ASN
AS2837
- OwnerKarolinska Institutet
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses16,384
- IPv4 ranges1
- IPv6 ranges0
Risk score0
Nothing suspicious found.
Network · AS2837
AS2837 Karolinska Institutet
AS2837 (Karolinska Institutet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Detect it in code
Spot AS2837 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 AS2837
Is AS2837 a datacenter or VPN network?
AS2837 (Karolinska Institutet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Who owns AS2837?
AS2837 is registered to Karolinska Institutet. It announces about 16,384 IPv4 addresses.
How do I detect traffic from AS2837?
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.