Network · AS91

AS91 Rensselaer Polytechnic Institute

AS91 (Rensselaer Polytechnic Institute) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS91

  • OwnerRensselaer Polytechnic Institute
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses330,496
  • IPv4 ranges11
  • IPv6 ranges2
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 146.8.0.0/16
  • 129.5.0.0/16
  • 129.161.0.0/16
  • 128.213.0.0/16
  • 128.113.0.0/16
  • 204.76.224.0/22
  • 204.76.228.0/23
  • 204.76.222.0/23
  • 204.145.205.0/24
  • 192.12.92.0/24
  • 192.12.91.0/24

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

Check an IP address →

Detect it in code

Spot AS91 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 AS91

Is AS91 a datacenter or VPN network?

AS91 (Rensselaer Polytechnic Institute) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS91?

AS91 is registered to Rensselaer Polytechnic Institute. It announces about 330,496 IPv4 addresses.

How do I detect traffic from AS91?

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.