Network · AS18791

AS18791 Texas Christian University

AS18791 (Texas Christian University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18791

OwnerTexas Christian University
KindInternet service provider
Servers, not peopleno
IPv4 addresses65,792
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

138.237.0.0/16
74.200.134.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS18791 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 AS18791

Is AS18791 a datacenter or VPN network?

AS18791 (Texas Christian University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18791?

AS18791 is registered to Texas Christian University. It announces about 65,792 IPv4 addresses.

How do I detect traffic from AS18791?

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.