Network · AS23831

AS23831 NISIOWARI CATV CORPORATION

AS23831 (NISIOWARI CATV CORPORATION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS23831

OwnerNISIOWARI CATV CORPORATION
KindInternet service provider
Servers, not peopleno
IPv4 addresses18,432
IPv4 ranges7
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

202.179.32.0/19
116.90.144.0/20
115.85.136.0/21
223.27.180.0/22
219.100.128.0/22
103.6.16.0/22
103.235.112.0/22

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

Check an IP address →

Detect it in code

Spot AS23831 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 AS23831

Is AS23831 a datacenter or VPN network?

AS23831 (NISIOWARI CATV CORPORATION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS23831?

AS23831 is registered to NISIOWARI CATV CORPORATION. It announces about 18,432 IPv4 addresses.

How do I detect traffic from AS23831?

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.