Network · AS51825

AS51825 Telzar 019 International Telecommunications Services LTD

AS51825 (Telzar 019 International Telecommunications Services LTD) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51825

  • OwnerTelzar 019 International Telecommunica
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses12,796
  • IPv4 ranges15
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 213.137.64.0/20
  • 46.31.96.0/21
  • 147.234.96.0/21
  • 185.24.204.0/22
  • 147.234.92.0/22
  • 147.234.64.0/22
  • 147.234.72.0/23
  • 141.226.82.0/23
  • 147.234.68.0/24
  • 147.234.69.0/25
  • 147.234.69.128/26
  • 147.234.69.192/27

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

Check an IP address →

Detect it in code

Spot AS51825 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 AS51825

Is AS51825 a datacenter or VPN network?

AS51825 (Telzar 019 International Telecommunications Services LTD) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51825?

AS51825 is registered to Telzar 019 International Telecommunications Services LTD. It announces about 12,796 IPv4 addresses.

How do I detect traffic from AS51825?

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.