Network · AS20252

AS20252 Joan and Sanford I. Weill Medical College and Graduate School of Medical Scienc

AS20252 (Joan and Sanford I. Weill Medical College and Graduate School of Medical Scienc) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS20252

  • OwnerJoan and Sanford I. Weill Medical Coll
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses98,816
  • IPv4 ranges4
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 157.139.0.0/16
  • 140.251.0.0/17
  • 38.146.193.0/24
  • 207.162.253.0/24

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

Check an IP address →

Detect it in code

Spot AS20252 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 AS20252

Is AS20252 a datacenter or VPN network?

AS20252 (Joan and Sanford I. Weill Medical College and Graduate School of Medical Scienc) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS20252?

AS20252 is registered to Joan and Sanford I. Weill Medical College and Graduate School of Medical Scienc. It announces about 98,816 IPv4 addresses.

How do I detect traffic from AS20252?

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.