Network · AS38

AS38 University of Illinois

AS38 (University of Illinois) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS38

OwnerUniversity of Illinois
KindInternet service provider
Servers, not peopleno
IPv4 addresses210,944
IPv4 ranges6
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

192.17.0.0/16
130.126.0.0/16
128.174.0.0/16
72.36.64.0/19
72.36.96.0/20
72.36.112.0/21

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

Check an IP address →

Detect it in code

Spot AS38 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 AS38

Is AS38 a datacenter or VPN network?

AS38 (University of Illinois) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS38?

AS38 is registered to University of Illinois. It announces about 210,944 IPv4 addresses.

How do I detect traffic from AS38?

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.