Network · AS16700

AS16700 CNSNext

AS16700 (CNSNext) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS16700

OwnerCNSNext
KindInternet service provider
Servers, not peopleno
IPv4 addresses38,400
IPv4 ranges12
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

64.39.128.0/19
216.212.224.0/19
66.220.176.0/20
204.2.0.0/20
173.214.144.0/20
66.252.200.0/21
216.157.144.0/21
192.173.136.0/21
72.162.168.0/22
199.192.140.0/22
104.244.140.0/22
72.162.180.0/23

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

Check an IP address →

Detect it in code

Spot AS16700 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 AS16700

Is AS16700 a datacenter or VPN network?

AS16700 (CNSNext) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS16700?

AS16700 is registered to CNSNext. It announces about 38,400 IPv4 addresses.

How do I detect traffic from AS16700?

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.