Network · AS21549

AS21549 Iron Mountain Inc

AS21549 (Iron Mountain Inc) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21549

  • OwnerIron Mountain Inc
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses5,120
  • IPv4 ranges11
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 216.229.156.0/22
  • 216.229.144.0/22
  • 216.229.152.0/23
  • 208.66.142.0/23
  • 138.207.76.0/23
  • 216.229.154.0/24
  • 208.66.139.0/24
  • 170.62.38.0/24
  • 170.62.126.0/24
  • 138.207.79.0/24
  • 138.207.75.0/24

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

Check an IP address →

Detect it in code

Spot AS21549 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 AS21549

Is AS21549 a datacenter or VPN network?

AS21549 (Iron Mountain Inc) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21549?

AS21549 is registered to Iron Mountain Inc. It announces about 5,120 IPv4 addresses.

How do I detect traffic from AS21549?

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.