Network · AS4961

AS4961 Daewoo Information Systems

AS4961 (Daewoo Information Systems) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS4961

OwnerDaewoo Information Systems
KindInternet service provider
Servers, not peopleno
IPv4 addresses95,744
IPv4 ranges17
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

165.133.128.0/17
152.149.128.0/17
152.149.64.0/18
211.217.8.0/21
210.122.24.0/21
152.149.56.0/21
152.149.40.0/21
211.217.16.0/22
210.122.20.0/22
152.149.52.0/22
211.217.20.0/23
165.133.38.0/23

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.

Check an IP address →

Detect it in code

Spot AS4961 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 AS4961

Is AS4961 a datacenter or VPN network?

AS4961 (Daewoo Information Systems) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS4961?

AS4961 is registered to Daewoo Information Systems. It announces about 95,744 IPv4 addresses.

How do I detect traffic from AS4961?

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.