Network · AS17957

AS17957 SOUTH TOKYO CABLETELEVISION

AS17957 (SOUTH TOKYO CABLETELEVISION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17957

OwnerSOUTH TOKYO CABLETELEVISION
KindInternet service provider
Servers, not peopleno
IPv4 addresses19,456
IPv4 ranges6
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

210.191.128.0/19
219.103.96.0/20
49.236.232.0/21
202.122.24.0/21
115.165.184.0/21
110.232.236.0/22

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

Check an IP address →

Detect it in code

Spot AS17957 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 AS17957

Is AS17957 a datacenter or VPN network?

AS17957 (SOUTH TOKYO CABLETELEVISION) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17957?

AS17957 is registered to SOUTH TOKYO CABLETELEVISION. It announces about 19,456 IPv4 addresses.

How do I detect traffic from AS17957?

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.