Network · AS19148

AS19148 Leaseweb USA, Inc.

AS19148 (Leaseweb USA, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS19148

OwnerLeaseweb USA, Inc.
KindInternet service provider
Servers, not peopleno
IPv4 addresses64,256
IPv4 ranges43
IPv6 ranges11

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

23.81.224.0/19
23.81.48.0/20
64.120.56.0/21
23.83.144.0/21
23.83.128.0/21
23.82.152.0/21
23.81.88.0/21
23.81.192.0/21
23.81.16.0/21
23.81.144.0/21
23.81.128.0/21
23.81.120.0/21

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

Check an IP address →

Detect it in code

Spot AS19148 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 AS19148

Is AS19148 a datacenter or VPN network?

AS19148 (Leaseweb USA, Inc.) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS19148?

AS19148 is registered to Leaseweb USA, Inc.. It announces about 64,256 IPv4 addresses.

How do I detect traffic from AS19148?

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.