Network · AS21889

AS21889 Rapid Systems Corporation

AS21889 (Rapid Systems Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21889

  • OwnerRapid Systems Corporation
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses19,456
  • IPv4 ranges13
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 67.208.192.0/20
  • 205.201.144.0/20
  • 173.195.192.0/20
  • 198.92.96.0/21
  • 198.77.224.0/21
  • 185.57.60.0/22
  • 216.202.124.0/23
  • 216.202.123.0/24
  • 209.84.255.0/24
  • 209.84.253.0/24
  • 209.84.245.0/24
  • 198.77.232.0/24

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

Check an IP address →

Detect it in code

Spot AS21889 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 AS21889

Is AS21889 a datacenter or VPN network?

AS21889 (Rapid Systems Corporation) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21889?

AS21889 is registered to Rapid Systems Corporation. It announces about 19,456 IPv4 addresses.

How do I detect traffic from AS21889?

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.