Network · AS7203

AS7203 Leaseweb USA, Inc.

AS7203 (Leaseweb USA, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS7203

OwnerLeaseweb USA, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses185,344
IPv4 ranges110
IPv6 ranges12

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

23.108.160.0/19
23.105.96.0/19
23.82.16.0/20
23.81.96.0/20
23.106.160.0/20
23.105.16.0/20
209.58.128.0/20
172.255.112.0/20
147.255.48.0/20
147.255.176.0/20
72.37.224.0/21
64.64.24.0/21

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

Check an IP address →

Detect it in code

Spot AS7203 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 AS7203

Is AS7203 a datacenter or VPN network?

AS7203 (Leaseweb USA, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS7203?

AS7203 is registered to Leaseweb USA, Inc.. It announces about 185,344 IPv4 addresses.

How do I detect traffic from AS7203?

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.