Network · AS1501

AS1501 Headquarters, USAISC

AS1501 (Headquarters, USAISC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS1501

OwnerHeadquarters, USAISC
KindInternet service provider
Servers, not peopleno
IPv4 addresses40,448
IPv4 ranges90
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

155.26.224.0/20
158.11.16.0/22
155.30.124.0/22
155.26.200.0/22
155.20.24.0/22
155.20.16.0/22
150.196.240.0/22
147.104.100.0/22
143.73.92.0/22
143.73.76.0/22
143.70.4.0/22
143.194.136.0/22

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

Check an IP address →

Detect it in code

Spot AS1501 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 AS1501

Is AS1501 a datacenter or VPN network?

AS1501 (Headquarters, USAISC) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS1501?

AS1501 is registered to Headquarters, USAISC. It announces about 40,448 IPv4 addresses.

How do I detect traffic from AS1501?

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.