Network · AS3755

AS3755 NYSERNet

AS3755 (NYSERNet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS3755

OwnerNYSERNet
KindInternet service provider
Servers, not peopleno
IPv4 addresses8,704
IPv4 ranges4
IPv6 ranges2

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

199.110.240.0/20
137.238.240.0/20
199.109.84.0/24
192.77.173.0/24

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

Check an IP address →

Detect it in code

Spot AS3755 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 AS3755

Is AS3755 a datacenter or VPN network?

AS3755 (NYSERNet) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS3755?

AS3755 is registered to NYSERNet. It announces about 8,704 IPv4 addresses.

How do I detect traffic from AS3755?

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.