Network · AS21799

AS21799 Metropolitan Water District of Southern California

AS21799 (Metropolitan Water District of Southern California) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS21799

  • OwnerMetropolitan Water District of Souther
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses1,792
  • IPv4 ranges7
  • IPv6 ranges0
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 144.166.74.0/24
  • 144.166.56.0/24
  • 144.166.55.0/24
  • 144.166.53.0/24
  • 144.166.178.0/24
  • 144.166.176.0/24
  • 144.166.174.0/24

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

Check an IP address →

Detect it in code

Spot AS21799 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 AS21799

Is AS21799 a datacenter or VPN network?

AS21799 (Metropolitan Water District of Southern California) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS21799?

AS21799 is registered to Metropolitan Water District of Southern California. It announces about 1,792 IPv4 addresses.

How do I detect traffic from AS21799?

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.