Network check
ASN
AS33837
- OwnerFredrik Holmqvist
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses4,096
- IPv4 ranges1
- IPv6 ranges1
Risk score0
Nothing suspicious found.
Network · AS33837
AS33837 Fredrik Holmqvist
AS33837 (Fredrik Holmqvist) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Detect it in code
Spot AS33837 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 AS33837
Is AS33837 a datacenter or VPN network?
AS33837 (Fredrik Holmqvist) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
Who owns AS33837?
AS33837 is registered to Fredrik Holmqvist. It announces about 4,096 IPv4 addresses.
How do I detect traffic from AS33837?
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.