Network · AS42840

AS42840 S.WERK GMBH

AS42840 (S.WERK GMBH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS42840

OwnerS.WERK GMBH
KindInternet service provider
Servers, not peopleno
IPv4 addresses4,096
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

83.136.128.0/21
77.73.248.0/21

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

Check an IP address →

Detect it in code

Spot AS42840 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 AS42840

Is AS42840 a datacenter or VPN network?

AS42840 (S.WERK GMBH) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS42840?

AS42840 is registered to S.WERK GMBH. It announces about 4,096 IPv4 addresses.

How do I detect traffic from AS42840?

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.