Network · AS17623

AS17623 China Unicom Shenzen network

AS17623 (China Unicom Shenzen network) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS17623

OwnerChina Unicom Shenzen network
KindInternet service provider
Servers, not peopleno
IPv4 addresses428,741
IPv4 ranges201
IPv6 ranges95

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

27.38.0.0/16
163.125.0.0/16
27.46.0.0/18
210.21.192.0/18
58.251.0.0/19
58.250.32.0/19
58.250.160.0/19
27.46.64.0/19
27.39.32.0/19
202.170.128.0/19
157.122.0.0/19
112.95.96.0/19

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

Check an IP address →

Detect it in code

Spot AS17623 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 AS17623

Is AS17623 a datacenter or VPN network?

AS17623 (China Unicom Shenzen network) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS17623?

AS17623 is registered to China Unicom Shenzen network. It announces about 428,741 IPv4 addresses.

How do I detect traffic from AS17623?

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.