Network · AS17937

AS17937 NIKKEI ADVANCED SYSTEMS INC.

AS17937 (NIKKEI ADVANCED SYSTEMS INC.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17937

OwnerNIKKEI ADVANCED SYSTEMS INC.
KindInternet service provider
Servers, not peopleno
IPv4 addresses5,376
IPv4 ranges3
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

218.216.16.0/20
115.187.92.0/22
202.26.187.0/24

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

Check an IP address →

Detect it in code

Spot AS17937 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 AS17937

Is AS17937 a datacenter or VPN network?

AS17937 (NIKKEI ADVANCED SYSTEMS INC.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17937?

AS17937 is registered to NIKKEI ADVANCED SYSTEMS INC.. It announces about 5,376 IPv4 addresses.

How do I detect traffic from AS17937?

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.