Network · AS39506

AS39506 Syntis SARL

AS39506 (Syntis SARL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS39506

OwnerSyntis SARL
KindInternet service provider
Servers, not peopleno
IPv4 addresses3,072
IPv4 ranges6
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

185.53.184.0/22
5.83.232.0/23
195.210.42.0/23
193.58.174.0/23
91.216.228.0/24
5.83.234.0/24

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

Check an IP address →

Detect it in code

Spot AS39506 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 AS39506

Is AS39506 a datacenter or VPN network?

AS39506 (Syntis SARL) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS39506?

AS39506 is registered to Syntis SARL. It announces about 3,072 IPv4 addresses.

How do I detect traffic from AS39506?

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.