Network · AS12145

AS12145 Colorado State University

AS12145 (Colorado State University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS12145

OwnerColorado State University
KindInternet service provider
Servers, not peopleno
IPv4 addresses81,664
IPv4 ranges7
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

129.82.0.0/16
129.19.32.0/19
129.19.16.0/20
129.19.8.0/21
129.19.0.0/22
129.19.4.0/23
129.19.7.0/24

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

Check an IP address →

Detect it in code

Spot AS12145 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 AS12145

Is AS12145 a datacenter or VPN network?

AS12145 (Colorado State University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS12145?

AS12145 is registered to Colorado State University. It announces about 81,664 IPv4 addresses.

How do I detect traffic from AS12145?

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.