Network · AS1124

AS1124 Universiteit van Amsterdam

AS1124 (Universiteit van Amsterdam) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS1124

OwnerUniversiteit van Amsterdam
KindInternet service provider
Servers, not peopleno
IPv4 addresses196,608
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

146.50.0.0/16
145.18.0.0/16
145.109.0.0/16

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

Check an IP address →

Detect it in code

Spot AS1124 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 AS1124

Is AS1124 a datacenter or VPN network?

AS1124 (Universiteit van Amsterdam) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS1124?

AS1124 is registered to Universiteit van Amsterdam. It announces about 196,608 IPv4 addresses.

How do I detect traffic from AS1124?

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.