Network · AS18015

AS18015 Fastcom Limited

AS18015 (Fastcom Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS18015

OwnerFastcom Limited
KindInternet service provider
Servers, not peopleno
IPv4 addresses15,616
IPv4 ranges5
IPv6 ranges1

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

180.189.192.0/19
124.150.160.0/20
182.236.120.0/21
103.2.120.0/22
45.64.203.0/24

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

Check an IP address →

Detect it in code

Spot AS18015 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 AS18015

Is AS18015 a datacenter or VPN network?

AS18015 (Fastcom Limited) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS18015?

AS18015 is registered to Fastcom Limited. It announces about 15,616 IPv4 addresses.

How do I detect traffic from AS18015?

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.