Network · AS15665

AS15665 Instytut Geofizyki PAN

AS15665 (Instytut Geofizyki PAN) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS15665

OwnerInstytut Geofizyki PAN
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

213.135.32.0/21
213.135.40.0/23

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

Check an IP address →

Detect it in code

Spot AS15665 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 AS15665

Is AS15665 a datacenter or VPN network?

AS15665 (Instytut Geofizyki PAN) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS15665?

AS15665 is registered to Instytut Geofizyki PAN. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS15665?

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.