Network · AS50321

AS50321 FOP "Reznichenko Sergey Mykolayovich"

AS50321 (FOP "Reznichenko Sergey Mykolayovich") looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS50321

OwnerFOP "Reznichenko Sergey Mykolayovich"
KindInternet service provider
Servers, not peopleno
IPv4 addresses768
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

91.238.104.0/23
141.11.252.0/24

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

Check an IP address →

Detect it in code

Spot AS50321 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 AS50321

Is AS50321 a datacenter or VPN network?

AS50321 (FOP "Reznichenko Sergey Mykolayovich") looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS50321?

AS50321 is registered to FOP "Reznichenko Sergey Mykolayovich". It announces about 768 IPv4 addresses.

How do I detect traffic from AS50321?

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.