Network · AS203361

AS203361 MASSELIN COMMUNICATION SAS

AS203361 (MASSELIN COMMUNICATION SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS203361

OwnerMASSELIN COMMUNICATION SAS
KindInternet service provider
Servers, not peopleno
IPv4 addresses2,048
IPv4 ranges2
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

185.42.100.0/22
185.105.152.0/22

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-22.

Check an IP address →

Detect it in code

Spot AS203361 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 AS203361

Is AS203361 a datacenter or VPN network?

AS203361 (MASSELIN COMMUNICATION SAS) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS203361?

AS203361 is registered to MASSELIN COMMUNICATION SAS. It announces about 2,048 IPv4 addresses.

How do I detect traffic from AS203361?

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.