Network · AS198840

AS198840 YUJUN KIM trading as ALCLOUD

AS198840 (YUJUN KIM trading as ALCLOUD) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS198840

OwnerYUJUN KIM trading as ALCLOUD
KindInternet service provider
Servers, not peopleno
IPv4 addresses512
IPv4 ranges2
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

169.40.51.0/24
142.249.58.0/24

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

Check an IP address →

Detect it in code

Spot AS198840 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 AS198840

Is AS198840 a datacenter or VPN network?

AS198840 (YUJUN KIM trading as ALCLOUD) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS198840?

AS198840 is registered to YUJUN KIM trading as ALCLOUD. It announces about 512 IPv4 addresses.

How do I detect traffic from AS198840?

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.