Network · AS4673

AS4673 NTT DATA CORPORATION

AS4673 (NTT DATA CORPORATION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS4673

OwnerNTT DATA CORPORATION
KindInternet service provider
Servers, not peopleno
IPv4 addresses237,568
IPv4 ranges6
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

210.144.0.0/16
203.182.0.0/16
163.135.0.0/16
202.217.0.0/17
202.235.96.0/20
202.235.64.0/20

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

Check an IP address →

Detect it in code

Spot AS4673 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 AS4673

Is AS4673 a datacenter or VPN network?

AS4673 (NTT DATA CORPORATION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS4673?

AS4673 is registered to NTT DATA CORPORATION. It announces about 237,568 IPv4 addresses.

How do I detect traffic from AS4673?

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.