Network · AS51545

AS51545 zsah Limited

AS51545 (zsah Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS51545

Ownerzsah Limited
KindInternet service provider
Servers, not peopleno
IPv4 addresses1,024
IPv4 ranges3
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

185.155.106.0/23
91.217.245.0/24
185.155.104.0/24

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

Check an IP address →

Detect it in code

Spot AS51545 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 AS51545

Is AS51545 a datacenter or VPN network?

AS51545 (zsah Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS51545?

AS51545 is registered to zsah Limited. It announces about 1,024 IPv4 addresses.

How do I detect traffic from AS51545?

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.