Network · AS399856

AS399856 Pratt Institute

AS399856 (Pratt Institute) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS399856

OwnerPratt Institute
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,536
IPv4 ranges2
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

45.45.228.0/22
65.51.58.0/23

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS399856 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 AS399856

Is AS399856 a datacenter or VPN network?

AS399856 (Pratt Institute) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS399856?

AS399856 is registered to Pratt Institute. It announces about 1,536 IPv4 addresses.

How do I detect traffic from AS399856?

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.