Network · AS5408

AS5408 National Infrastructures for Research and Technology S.A.

AS5408 (National Infrastructures for Research and Technology S.A.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS5408

  • OwnerNational Infrastructures for Research
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses179,712
  • IPv4 ranges66
  • IPv6 ranges123
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 37.32.128.0/17
  • 150.140.128.0/17
  • 62.217.64.0/18
  • 83.212.96.0/19
  • 83.212.32.0/19
  • 195.251.0.0/19
  • 83.212.208.0/20
  • 83.212.0.0/20
  • 195.251.128.0/20
  • 195.130.80.0/20
  • 194.177.208.0/20
  • 83.212.80.0/21

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

Check an IP address →

Detect it in code

Spot AS5408 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 AS5408

Is AS5408 a datacenter or VPN network?

AS5408 (National Infrastructures for Research and Technology S.A.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS5408?

AS5408 is registered to National Infrastructures for Research and Technology S.A.. It announces about 179,712 IPv4 addresses.

How do I detect traffic from AS5408?

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.