Network · AS17645

AS17645 NTT Singapore Pte Ltd

AS17645 (NTT Singapore Pte Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17645

  • OwnerNTT Singapore Pte Ltd
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses76,544
  • IPv4 ranges12
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 116.51.128.0/17
  • 116.51.64.0/18
  • 202.136.160.0/19
  • 58.65.16.0/20
  • 116.51.48.0/20
  • 116.51.0.0/20
  • 58.65.0.0/21
  • 116.51.32.0/21
  • 58.65.8.0/22
  • 175.28.8.0/22
  • 58.65.14.0/23
  • 58.65.12.0/24

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

Check an IP address →

Detect it in code

Spot AS17645 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 AS17645

Is AS17645 a datacenter or VPN network?

AS17645 (NTT Singapore Pte Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17645?

AS17645 is registered to NTT Singapore Pte Ltd. It announces about 76,544 IPv4 addresses.

How do I detect traffic from AS17645?

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.