Network · AS16557

AS16557 Colo Solutions

AS16557 (Colo Solutions) is a hosting provider network. Its addresses are servers, not home or mobile connections, so a signup from it is likely automated or behind a VPN.

Network check ASN

AS16557

OwnerColo Solutions
KindHosting provider
Servers, not peopleyes
IPv4 addresses10,752
IPv4 ranges15
IPv6 ranges1

Risk score55

datacenter_ipAddresses here are servers, not home or mobile connections.

Largest IPv4 ranges

66.103.128.0/20
66.103.144.0/21
72.21.8.0/23
72.21.12.0/23
66.103.156.0/23
66.103.152.0/23
204.152.22.0/23
72.21.22.0/24
72.21.20.0/24
72.21.14.0/24
66.103.159.0/24
209.126.92.0/24

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

Check an IP address →

Detect it in code

Spot AS16557 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 AS16557

Is AS16557 a datacenter or VPN network?

AS16557 (Colo Solutions) is a hosting provider network. Its addresses are servers, not home or mobile connections, so a signup from it is likely automated or behind a VPN.

Who owns AS16557?

AS16557 is registered to Colo Solutions. It announces about 10,752 IPv4 addresses.

How do I detect traffic from AS16557?

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.