Network · AS43513

AS43513 Sia Nano IT

AS43513 (Sia Nano IT) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS43513

OwnerSia Nano IT
KindInternet service provider
Servers, not peopleno
IPv4 addresses63,744
IPv4 ranges45
IPv6 ranges11

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

86.63.160.0/19
91.135.80.0/20
89.248.80.0/20
87.246.128.0/20
80.250.48.0/20
94.140.96.0/21
94.140.112.0/21
85.31.96.0/21
85.254.32.0/21
5.44.216.0/21
46.19.144.0/21
31.170.16.0/21

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

Check an IP address →

Detect it in code

Spot AS43513 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 AS43513

Is AS43513 a datacenter or VPN network?

AS43513 (Sia Nano IT) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS43513?

AS43513 is registered to Sia Nano IT. It announces about 63,744 IPv4 addresses.

How do I detect traffic from AS43513?

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.