Network · AS57021

AS57021 Netnod AB

AS57021 (Netnod AB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS57021

  • OwnerNetnod AB
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses1,792
  • IPv4 ranges3
  • IPv6 ranges3
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 194.58.204.0/22
  • 194.58.202.0/23
  • 194.58.200.0/24

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

Check an IP address →

Detect it in code

Spot AS57021 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 AS57021

Is AS57021 a datacenter or VPN network?

AS57021 (Netnod AB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS57021?

AS57021 is registered to Netnod AB. It announces about 1,792 IPv4 addresses.

How do I detect traffic from AS57021?

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.