Network · AS201637

AS201637 Tomasz Naruszewicz trading as "BARTNET" NARUSZEWICZ I KRAWCZUN sp.j.

AS201637 (Tomasz Naruszewicz trading as "BARTNET" NARUSZEWICZ I KRAWCZUN sp.j.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS201637

  • OwnerTomasz Naruszewicz trading as "BARTNET
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses2,304
  • IPv4 ranges3
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 91.196.108.0/22
  • 185.140.100.0/22
  • 194.116.166.0/24

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

Check an IP address →

Detect it in code

Spot AS201637 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 AS201637

Is AS201637 a datacenter or VPN network?

AS201637 (Tomasz Naruszewicz trading as "BARTNET" NARUSZEWICZ I KRAWCZUN sp.j.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS201637?

AS201637 is registered to Tomasz Naruszewicz trading as "BARTNET" NARUSZEWICZ I KRAWCZUN sp.j.. It announces about 2,304 IPv4 addresses.

How do I detect traffic from AS201637?

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.