Network · AS17289

AS17289 ULTIMATE SOFTWARE GROUP

AS17289 (ULTIMATE SOFTWARE GROUP) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17289

OwnerULTIMATE SOFTWARE GROUP
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,280
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

135.84.72.0/22
135.84.68.0/24

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

Check an IP address →

Detect it in code

Spot AS17289 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 AS17289

Is AS17289 a datacenter or VPN network?

AS17289 (ULTIMATE SOFTWARE GROUP) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17289?

AS17289 is registered to ULTIMATE SOFTWARE GROUP. It announces about 1,280 IPv4 addresses.

How do I detect traffic from AS17289?

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.