.SECURITY domain list & statistics

1. Zone summary: .security

The .SECURITY zone contains 952 domain names, according to the complete zone-file snapshot dated 03 Oct 2026. In the latest available comparison, from 02 Oct 2026 to 03 Oct 2026, 0 domain names were added to the zone and 0 were removed. The net zone change was 0 domains (no net gain or loss).

Complete zone-file coverage. Counts describe domains present in the zone file; registered domains absent from the zone file are excluded. Additions and removals are not independently verified registration or expiration events.

3. Zone Details: .security

.security is a specialized top-level domain intended for organizations, vendors, and professionals operating in cybersecurity, physical security, safety engineering, incident response, compliance, and related consulting or training services. Typical uses include corporate sites for security firms, product pages for security tools, knowledge hubs, vulnerability disclosure pages, customer portals, and marketing or certification landing pages aimed at an audience explicitly seeking security expertise.

Choosing a .security name communicates focus and relevance: it reduces ambiguity about the nature of the business or content and can reinforce a brand's authority in the security space. Companies use it to differentiate security-specific offerings from broader corporate sites, to host trust centers or advisories, or to create concise, memorable addresses that align with professional positioning. It is particularly useful when the desired .com or other common names are unavailable or when a domain extension can clarify intent to customers and partners.

When deploying a .security domain, combine it with clear branding, verified credentials, and security best practices such as HTTPS, published policies, and transparent contact or incident response information. Consider using .security for targeted campaigns, subdomains for support and status pages, and consistent naming across marketing and technical assets to maintain credibility and make it easier for users to find security-related resources.

Related zones:

5. Download latest .security domain list via API

import axios from 'axios';
import fs from 'fs';
import { pipeline } from 'stream/promises';

const response = await axios({
  method: 'GET',
  url: 'https://allzonefiles.io/api/v1/zones/security/dl',
  responseType: 'stream',
  headers: {
    // Replace with your API key
    'Authorization': 'Bearer allzfio_5c1572d016b846ce99ce7a177922ff21'
  }
});

await pipeline(response.data, fs.createWriteStream('security.txt.gz'));

console.log('Download complete!');

package main

import (
    "io"
    "net/http"
    "os"
)

func main() {
    url := "https://allzonefiles.io/api/v1/zones/security/dl"
    file, _ := os.Create("security.txt.gz")
    defer out.Close()

    req, _ := http.NewRequest("GET", url, nil)
    // Replace with your API key
    req.Header.Set("Authorization", "Bearer allzfio_5c1572d016b846ce99ce7a177922ff21")

    resp, _ := http.DefaultClient.Do(req)
    defer resp.Body.Close()

    io.Copy(out, resp.Body)
}

import requests

url = "https://allzonefiles.io/api/v1/zones/security/dl"
# Replace with your API key
headers = {"Authorization": "Bearer allzfio_5c1572d016b846ce99ce7a177922ff21"}

with requests.get(url, headers=headers, stream=True) as r:
    r.raise_for_status()
    with open("security.txt.gz", "wb") as f:
        for chunk in r.iter_content(chunk_size=128*1024):
            f.write(chunk)

import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class FileDownloader {
    public static void main(String[] args) throws Exception {
        URL url = new URL("https://allzonefiles.io/api/v1/zones/security/dl");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setRequestMethod("GET");
        // Replace with your API key
        connection.setRequestProperty("Authorization", "Bearer allzfio_5c1572d016b846ce99ce7a177922ff21");

        try (InputStream in = connection.getInputStream();
             FileOutputStream out = new FileOutputStream("security.txt.gz")) {

            byte[] buffer = new byte[8192];
            int bytesRead;
            while ((bytesRead = in.read(buffer)) != -1) {
                out.write(buffer, 0, bytesRead);
            }
        }

        System.out.println("Download complete!");
    }
}

Use .SECURITY domain data in your workflow

Compare all domain lists, access historical datasets, or download all available zones in one ZIP.