Network · AS21813

AS21813 Trillium Health Partners

AS21813 (Trillium Health Partners) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21813

OwnerTrillium Health Partners
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,560
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

205.210.236.0/22
205.210.176.0/22
205.210.240.0/23

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

Check an IP address →

Detect it in code

Spot AS21813 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 AS21813

Is AS21813 a datacenter or VPN network?

AS21813 (Trillium Health Partners) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21813?

AS21813 is registered to Trillium Health Partners. It announces about 2,560 IPv4 addresses.

How do I detect traffic from AS21813?

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.