Network · AS57131

AS57131 IP Osteraker AB

AS57131 (IP Osteraker AB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS57131

  • OwnerIP Osteraker AB
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses4,352
  • IPv4 ranges8
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 185.180.252.0/22
  • 185.130.164.0/22
  • 194.71.200.0/23
  • 193.180.82.0/23
  • 193.180.194.0/23
  • 194.71.95.0/24
  • 193.235.206.0/24
  • 193.235.203.0/24

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

Check an IP address →

Detect it in code

Spot AS57131 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 AS57131

Is AS57131 a datacenter or VPN network?

AS57131 (IP Osteraker AB) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS57131?

AS57131 is registered to IP Osteraker AB. It announces about 4,352 IPv4 addresses.

How do I detect traffic from AS57131?

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.