Network · AS2121

AS2121 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)

AS2121 (Reseaux IP Europeens Network Coordination Centre (RIPE NCC)) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS2121

OwnerReseaux IP Europeens Network Coordinat
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,048
IPv4 ranges1
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

193.0.24.0/21

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

Check an IP address →

Detect it in code

Spot AS2121 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 AS2121

Is AS2121 a datacenter or VPN network?

AS2121 (Reseaux IP Europeens Network Coordination Centre (RIPE NCC)) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS2121?

AS2121 is registered to Reseaux IP Europeens Network Coordination Centre (RIPE NCC). It announces about 2,048 IPv4 addresses.

How do I detect traffic from AS2121?

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.