Network · AS51424

AS51424 Jiri Sperl

AS51424 (Jiri Sperl) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51424

OwnerJiri Sperl
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,792
IPv4 ranges4
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

91.218.232.0/22
213.211.36.0/24
212.96.184.0/24
212.4.132.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.

Check an IP address →

Detect it in code

Spot AS51424 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 AS51424

Is AS51424 a datacenter or VPN network?

AS51424 (Jiri Sperl) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51424?

AS51424 is registered to Jiri Sperl. It announces about 1,792 IPv4 addresses.

How do I detect traffic from AS51424?

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.