Network · AS18400

AS18400 Xtreme Networks Limited

AS18400 (Xtreme Networks Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18400

OwnerXtreme Networks Limited
KindInternet service provider
Servers, not peopleno
IPv4 addresses9,728
IPv4 ranges4
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

203.171.32.0/19
103.11.240.0/22
202.36.162.0/24
103.35.88.0/24

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

Check an IP address →

Detect it in code

Spot AS18400 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 AS18400

Is AS18400 a datacenter or VPN network?

AS18400 (Xtreme Networks Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18400?

AS18400 is registered to Xtreme Networks Limited. It announces about 9,728 IPv4 addresses.

How do I detect traffic from AS18400?

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.