Network · AS20

AS20 University of Rochester

AS20 (University of Rochester) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS20

OwnerUniversity of Rochester
KindInternet service provider
Servers, not peopleno
IPv4 addresses66,048
IPv4 ranges3
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

128.151.0.0/16
199.89.214.0/24
192.5.53.0/24

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

Check an IP address →

Detect it in code

Spot AS20 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 AS20

Is AS20 a datacenter or VPN network?

AS20 (University of Rochester) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS20?

AS20 is registered to University of Rochester. It announces about 66,048 IPv4 addresses.

How do I detect traffic from AS20?

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.