Network · AS51331

AS51331 SychrovNET s.r.o

AS51331 (SychrovNET s.r.o) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51331

OwnerSychrovNET s.r.o
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,536
IPv4 ranges2
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

188.246.116.0/22
188.246.114.0/23

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

Check an IP address →

Detect it in code

Spot AS51331 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 AS51331

Is AS51331 a datacenter or VPN network?

AS51331 (SychrovNET s.r.o) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51331?

AS51331 is registered to SychrovNET s.r.o. It announces about 1,536 IPv4 addresses.

How do I detect traffic from AS51331?

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.