Network · AS51484

AS51484 Sieci Blokowe S.C.

AS51484 (Sieci Blokowe S.C.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51484

OwnerSieci Blokowe S.C.
KindInternet service provider
Servers, not peopleno
IPv4 addresses11,008
IPv4 ranges6
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

46.45.96.0/20
46.45.80.0/20
46.45.124.0/22
46.45.112.0/22
46.45.120.0/23
46.45.122.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS51484 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 AS51484

Is AS51484 a datacenter or VPN network?

AS51484 (Sieci Blokowe S.C.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51484?

AS51484 is registered to Sieci Blokowe S.C.. It announces about 11,008 IPv4 addresses.

How do I detect traffic from AS51484?

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.