Network · AS19398

AS19398 Tenet HealthSystem Medical, Inc.

AS19398 (Tenet HealthSystem Medical, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS19398

OwnerTenet HealthSystem Medical, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses6,656
IPv4 ranges10
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

155.139.104.0/21
172.85.72.0/22
155.139.24.0/22
199.5.30.0/23
155.139.92.0/23
155.139.116.0/23
155.139.41.0/24
155.139.39.0/24
155.139.128.0/24
155.139.115.0/24

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

Check an IP address →

Detect it in code

Spot AS19398 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 AS19398

Is AS19398 a datacenter or VPN network?

AS19398 (Tenet HealthSystem Medical, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS19398?

AS19398 is registered to Tenet HealthSystem Medical, Inc.. It announces about 6,656 IPv4 addresses.

How do I detect traffic from AS19398?

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.