Network · AS51208

AS51208 LSB Data Sp.z o.o.

AS51208 (LSB Data Sp.z o.o.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51208

OwnerLSB Data Sp.z o.o.
KindInternet service provider
Servers, not peopleno
IPv4 addresses256
IPv4 ranges1
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

91.216.204.0/24

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

Check an IP address →

Detect it in code

Spot AS51208 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 AS51208

Is AS51208 a datacenter or VPN network?

AS51208 (LSB Data Sp.z o.o.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51208?

AS51208 is registered to LSB Data Sp.z o.o.. It announces about 256 IPv4 addresses.

How do I detect traffic from AS51208?

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.