Network · AS203346

AS203346 Proper Support LLP

AS203346 (Proper Support LLP) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS203346

  • OwnerProper Support LLP
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses36,096
  • IPv4 ranges81
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 188.213.248.0/21
  • 188.209.120.0/21
  • 188.208.48.0/21
  • 91.218.236.0/22
  • 193.254.60.0/22
  • 193.254.48.0/22
  • 93.119.120.0/23
  • 93.119.118.0/23
  • 93.114.58.0/23
  • 93.114.52.0/23
  • 91.235.130.0/23
  • 89.41.50.0/23

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

Check an IP address →

Detect it in code

Spot AS203346 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 AS203346

Is AS203346 a datacenter or VPN network?

AS203346 (Proper Support LLP) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS203346?

AS203346 is registered to Proper Support LLP. It announces about 36,096 IPv4 addresses.

How do I detect traffic from AS203346?

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.