Network · AS13998

AS13998 University of Texas Southwestern Medical Center

AS13998 (University of Texas Southwestern Medical Center) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS13998

  • OwnerUniversity of Texas Southwestern Medic
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses85,504
  • IPv4 ranges11
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 129.112.0.0/16
  • 198.241.16.0/20
  • 198.215.96.0/20
  • 198.215.48.0/20
  • 198.215.176.0/20
  • 199.242.236.0/22
  • 198.215.36.0/22
  • 199.242.234.0/23
  • 199.165.152.0/23
  • 199.249.214.0/24
  • 199.165.154.0/24

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

Check an IP address →

Detect it in code

Spot AS13998 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 AS13998

Is AS13998 a datacenter or VPN network?

AS13998 (University of Texas Southwestern Medical Center) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS13998?

AS13998 is registered to University of Texas Southwestern Medical Center. It announces about 85,504 IPv4 addresses.

How do I detect traffic from AS13998?

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.