Network · AS62371

AS62371 Proton AG

AS62371 (Proton AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS62371

  • OwnerProton AG
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses3,328
  • IPv4 ranges9
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 185.70.40.0/22
  • 79.135.106.0/23
  • 95.36.98.0/24
  • 95.36.96.0/24
  • 194.0.147.0/24
  • 185.205.70.0/24
  • 176.119.200.0/24
  • 109.224.247.0/24
  • 109.224.244.0/24

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

Check an IP address →

Detect it in code

Spot AS62371 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 AS62371

Is AS62371 a datacenter or VPN network?

AS62371 (Proton AG) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS62371?

AS62371 is registered to Proton AG. It announces about 3,328 IPv4 addresses.

How do I detect traffic from AS62371?

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.