Network · AS51790

AS51790 SIEL, d.o.o.

AS51790 (SIEL, d.o.o.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51790

OwnerSIEL, d.o.o.
KindInternet service provider
Servers, not peopleno
IPv4 addresses8,192
IPv4 ranges14
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

46.19.8.0/21
45.136.188.0/22
209.16.152.0/22
185.97.52.0/22
185.57.144.0/23
185.185.88.0/23
91.230.238.0/24
217.61.252.0/24
198.60.216.0/24
195.128.141.0/24
193.3.59.0/24
185.92.228.0/24

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

Check an IP address →

Detect it in code

Spot AS51790 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 AS51790

Is AS51790 a datacenter or VPN network?

AS51790 (SIEL, d.o.o.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51790?

AS51790 is registered to SIEL, d.o.o.. It announces about 8,192 IPv4 addresses.

How do I detect traffic from AS51790?

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.