Network · AS51920

AS51920 VIVACOM Magyarorszag Kft

AS51920 (VIVACOM Magyarorszag Kft) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51920

OwnerVIVACOM Magyarorszag Kft
KindInternet service provider
Servers, not peopleno
IPv4 addresses5,888
IPv4 ranges7
IPv6 ranges7

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

45.9.200.0/22
45.66.200.0/22
45.136.120.0/22
185.92.116.0/22
185.220.188.0/22
185.188.56.0/23
185.188.58.0/24

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

Check an IP address →

Detect it in code

Spot AS51920 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 AS51920

Is AS51920 a datacenter or VPN network?

AS51920 (VIVACOM Magyarorszag Kft) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51920?

AS51920 is registered to VIVACOM Magyarorszag Kft. It announces about 5,888 IPv4 addresses.

How do I detect traffic from AS51920?

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.