Network · AS12054

AS12054 Alameda County

AS12054 (Alameda County) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS12054

OwnerAlameda County
KindInternet service provider
Servers, not peopleno
IPv4 addresses14,592
IPv4 ranges4
IPv6 ranges0

Risk score0

Nothing suspicious found.

Largest IPv4 ranges

166.107.64.0/19
166.107.96.0/20
166.107.112.0/21
166.107.120.0/24

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

Check an IP address →

Detect it in code

Spot AS12054 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 AS12054

Is AS12054 a datacenter or VPN network?

AS12054 (Alameda County) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS12054?

AS12054 is registered to Alameda County. It announces about 14,592 IPv4 addresses.

How do I detect traffic from AS12054?

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.