Network · AS2841

AS2841 Chalmers University of Technology

AS2841 (Chalmers University of Technology) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS2841

OwnerChalmers University of Technology
KindInternet service provider
Servers, not peopleno
IPv4 addresses67,584
IPv4 ranges8
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

129.16.0.0/16
192.36.224.0/23
192.71.154.0/24
192.71.1.0/24
192.5.50.0/24
192.36.245.0/24
192.36.185.0/24
192.36.111.0/24

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

Check an IP address →

Detect it in code

Spot AS2841 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 AS2841

Is AS2841 a datacenter or VPN network?

AS2841 (Chalmers University of Technology) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS2841?

AS2841 is registered to Chalmers University of Technology. It announces about 67,584 IPv4 addresses.

How do I detect traffic from AS2841?

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.