.KOELN domain list & statistics

1. Zone summary: .koeln

The .KOELN zone contains 16,701 domain names, according to the complete zone-file snapshot dated 02 Oct 2026. In the latest available comparison, from 01 Oct 2026 to 02 Oct 2026, 1 domain names were added to the zone and 3 were removed. The net zone change was -2 domains (net 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: .koeln

.koeln is a city-specific top-level domain that identifies websites as connected to Cologne (Köln), Germany. It provides a dedicated namespace for organizations, institutions and individuals who want to emphasize a Cologne address or audience. The extension is commonly used by commercial, cultural and civic entities to make geographic provenance explicit.

Typical use cases include local retailers and restaurants, museums and theatres, tourism services, event organizers, neighborhood associations and municipal information portals. Choosing .koeln helps with immediate recognition of location, can improve relevance for users seeking Cologne-specific services, and complements existing national or global domains for clearer local targeting.

Brands and projects pick .koeln to convey local authenticity and community affiliation while differentiating themselves from generic TLDs. It is useful when domain availability on generic extensions is limited, when strengthening regional SEO signals matters, or when the audience values a clear civic connection. Registrants should consider audience language, existing domain strategy and applicable registration policies when adopting .koeln.

Related zones:

5. Download latest .koeln 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/koeln/dl',
  responseType: 'stream',
  headers: {
    // Replace with your API key
    'Authorization': 'Bearer allzfio_5c1572d016b846ce99ce7a177922ff21'
  }
});

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

console.log('Download complete!');

package main

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

func main() {
    url := "https://allzonefiles.io/api/v1/zones/koeln/dl"
    file, _ := os.Create("koeln.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/koeln/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("koeln.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/koeln/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("koeln.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 .KOELN domain data in your workflow

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