Network · AS42541

AS42541 Fiberby ApS

AS42541 (Fiberby ApS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS42541

OwnerFiberby ApS
KindInternet service provider
Servers, not peopleno
IPv4 addresses11,008
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

89.23.224.0/19
193.106.164.0/22
185.10.220.0/22
194.62.216.0/23
193.104.135.0/24

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

Check an IP address →

Detect it in code

Spot AS42541 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 AS42541

Is AS42541 a datacenter or VPN network?

AS42541 (Fiberby ApS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS42541?

AS42541 is registered to Fiberby ApS. It announces about 11,008 IPv4 addresses.

How do I detect traffic from AS42541?

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.