Network · AS23578

AS23578 SK Broadband Co Ltd

AS23578 (SK Broadband Co Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS23578

OwnerSK Broadband Co Ltd
KindInternet service provider
Servers, not peopleno
IPv4 addresses67,584
IPv4 ranges5
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

124.28.0.0/17
27.120.0.0/18
124.28.128.0/18
45.112.96.0/22
103.51.176.0/22

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

Check an IP address →

Detect it in code

Spot AS23578 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 AS23578

Is AS23578 a datacenter or VPN network?

AS23578 (SK Broadband Co Ltd) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS23578?

AS23578 is registered to SK Broadband Co Ltd. It announces about 67,584 IPv4 addresses.

How do I detect traffic from AS23578?

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.