Network · AS57112

AS57112 F2X Operator B.V.

AS57112 (F2X Operator B.V.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS57112

OwnerF2X Operator B.V.
KindInternet service provider
Servers, not peopleno
IPv4 addresses31,232
IPv4 ranges21
IPv6 ranges3

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

81.30.64.0/20
5.104.112.0/20
217.76.16.0/20
31.177.32.0/21
86.111.208.0/22
45.92.224.0/22
45.91.56.0/22
45.84.40.0/22
185.87.156.0/22
185.87.116.0/22
185.87.104.0/22
185.82.192.0/22

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

Check an IP address →

Detect it in code

Spot AS57112 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 AS57112

Is AS57112 a datacenter or VPN network?

AS57112 (F2X Operator B.V.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS57112?

AS57112 is registered to F2X Operator B.V.. It announces about 31,232 IPv4 addresses.

How do I detect traffic from AS57112?

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.