Network · AS33455

AS33455 University of Northwestern

AS33455 (University of Northwestern) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS33455

OwnerUniversity of Northwestern
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,304
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

199.86.72.0/21
198.174.0.0/24

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

Check an IP address →

Detect it in code

Spot AS33455 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 AS33455

Is AS33455 a datacenter or VPN network?

AS33455 (University of Northwestern) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS33455?

AS33455 is registered to University of Northwestern. It announces about 2,304 IPv4 addresses.

How do I detect traffic from AS33455?

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.