Network · AS42421

AS42421 Turkiye Finans Katilim Bankasi A.S

AS42421 (Turkiye Finans Katilim Bankasi A.S) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS42421

OwnerTurkiye Finans Katilim Bankasi A.S
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,536
IPv4 ranges2
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

77.72.184.0/22
77.72.188.0/23

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

Check an IP address →

Detect it in code

Spot AS42421 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 AS42421

Is AS42421 a datacenter or VPN network?

AS42421 (Turkiye Finans Katilim Bankasi A.S) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS42421?

AS42421 is registered to Turkiye Finans Katilim Bankasi A.S. It announces about 1,536 IPv4 addresses.

How do I detect traffic from AS42421?

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.