Network · AS2523

AS2523 Internet Technology Research Consortium

AS2523 (Internet Technology Research Consortium) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS2523

OwnerInternet Technology Research Consortiu
KindInternet service provider
Servers, not peopleno
IPv4 addresses61,952
IPv4 ranges10
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

133.69.0.0/17
133.69.192.0/18
133.69.128.0/19
133.69.188.0/22
133.69.180.0/22
133.69.164.0/22
133.69.186.0/23
133.69.178.0/23
133.69.185.0/24
133.69.177.0/24

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

Check an IP address →

Detect it in code

Spot AS2523 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 AS2523

Is AS2523 a datacenter or VPN network?

AS2523 (Internet Technology Research Consortium) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS2523?

AS2523 is registered to Internet Technology Research Consortium. It announces about 61,952 IPv4 addresses.

How do I detect traffic from AS2523?

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.