AS3661
- OwnerThe Chinese University of Hong Kong
- KindInternet service provider
- Servers, not peopleno
- IPv4 addresses73,984
- IPv4 ranges6
- IPv6 ranges2
Nothing suspicious found.
Network · AS3661
AS3661 (The Chinese University of Hong Kong) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
AS3661
Nothing suspicious found.
137.189.0.0/16203.188.64.0/20123.255.64.0/21175.159.224.0/22103.49.160.0/22202.40.216.0/24Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.
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);AS3661 (The Chinese University of Hong Kong) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.
AS3661 is registered to The Chinese University of Hong Kong. It announces about 73,984 IPv4 addresses.
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.