Network · AS203587

AS203587 Antvvifi Bilisim ve Telekomunikasyon Hiz. San. ve Ticaret LTD STI

AS203587 (Antvvifi Bilisim ve Telekomunikasyon Hiz. San. ve Ticaret LTD STI) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS203587

  • OwnerAntvvifi Bilisim ve Telekomunikasyon H
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses256
  • IPv4 ranges1
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 217.20.255.0/24

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

Check an IP address →

Detect it in code

Spot AS203587 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 AS203587

Is AS203587 a datacenter or VPN network?

AS203587 (Antvvifi Bilisim ve Telekomunikasyon Hiz. San. ve Ticaret LTD STI) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS203587?

AS203587 is registered to Antvvifi Bilisim ve Telekomunikasyon Hiz. San. ve Ticaret LTD STI. It announces about 256 IPv4 addresses.

How do I detect traffic from AS203587?

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.