Network · AS203303

AS203303 PE Lavrynenko Sergii Oleksandrovych

AS203303 (PE Lavrynenko Sergii Oleksandrovych) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS203303

OwnerPE Lavrynenko Sergii Oleksandrovych
KindInternet service provider
Servers, not peopleno
IPv4 addresses512
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

45.10.91.0/24
185.138.228.0/24

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

Check an IP address →

Detect it in code

Spot AS203303 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 AS203303

Is AS203303 a datacenter or VPN network?

AS203303 (PE Lavrynenko Sergii Oleksandrovych) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS203303?

AS203303 is registered to PE Lavrynenko Sergii Oleksandrovych. It announces about 512 IPv4 addresses.

How do I detect traffic from AS203303?

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.