11 registered domains — Last update: 30 Apr 2026
Domain list for .ARPA zone - full list of registered domain names for the zone
Sample data:
as112.arpa e164.arpa home.arpa in-addr-servers.arpa in-addr.arpa ip6-servers.arpa ip6.arpa ipv4only.arpa iris.arpa uri.arpa urn.arpa
| Date | Total domains | New | Deleted |
|---|---|---|---|
| 2026-04-29 | 11 | 0 | 0 |
| 2026-04-30 | 11 | 0 | 0 |
| Zone Name | arpa |
|---|---|
| Zone Type | infrastructure |
| Active | YES |
| WHOIS Server | whois.iana.org |
| RDAP Server | |
| Managing Organization | Internet Architecture Board (IAB) |
| Organization Address |
c/o IETF Administration LLC 1000 N. West St. Suite 1200 Wilmington DE 19801 United States of America (the) |
Access the archive of historical .ARPA zone files and analyze how domains in the .ARPA namespace have evolved over time. Historical zone data helps researchers and engineers study domain growth, DNS infrastructure changes, and long-term internet trends.
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/arpa/dl',
responseType: 'stream',
headers: {
// Replace with your API key
'Authorization': 'Bearer allzfio_5c1572d016b846ce99ce7a177922ff21'
}
});
await pipeline(response.data, fs.createWriteStream('arpa.txt.gz'));
console.log('Download complete!');
package main
import (
"io"
"net/http"
"os"
)
func main() {
url := "https://allzonefiles.io/api/v1/zones/arpa/dl"
file, _ := os.Create("arpa.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/arpa/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("arpa.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/arpa/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("arpa.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!");
}
}