Network · AS51158

AS51158 OOO SET

AS51158 (OOO SET) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51158

OwnerOOO SET
KindInternet service provider
Servers, not peopleno
IPv4 addresses3,072
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

31.130.248.0/21
194.28.212.0/22

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

Check an IP address →

Detect it in code

Spot AS51158 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 AS51158

Is AS51158 a datacenter or VPN network?

AS51158 (OOO SET) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51158?

AS51158 is registered to OOO SET. It announces about 3,072 IPv4 addresses.

How do I detect traffic from AS51158?

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.