List of .koeln Zone Domains

.koeln Domain Zone Datasets

Download a .koeln domain name list or a full dataset with DNS, server IP, emails, and phone numbers.

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Zone TLD: .KOELN

Zone type: generic (gTLD)

Update frequency: daily (last updated on September 10, 2026)

Total domains monitored: 21,130

Live domains included in datasets: 17,945

Datasets available:
Basic Domain List (download sample ๐Ÿ’พ)
Detailed Domain Dataset (download sample ๐Ÿ’พ)

Filters: Active domains, New domains (last 24h)

Dataset type
choose a type		 Last updated
next update: tomorrow 		Active domains
currently registered		 New domains
last 24h 		Emails
crawled from websites 		Phones
crawled from websites
Basic Domain List Sep 10, 2026 17,945 2 --- --- Download GET
Detailed Domain Dataset Sep 10, 2026 17,945 2 YES YES Download GET

How many .koeln domains are registered?

As of September 10, 2026, the .koeln domain list contains 17,945 active .koeln domains, 0.005% of all domains tracked by NetAPI, which makes .koeln the #320 largest of 1,584 zones. 2 new .koeln domains were registered in the last 24 hours and 66 over the last 30 days. Net of expired and deleted domains, the zone changed by โˆ’602 (โˆ’3.25%) in 30 days and by โˆ’310 (โˆ’1.70%) year over year.

17,945
active .koeln domains
2
new domains, last 24h
66
new domains, last 30 days
โˆ’1.70%
1-year growth (โˆ’310)
#320 of 1,584
zones by size
0.005%
of all tracked domains

The .koeln domain list and the detailed dataset above are refreshed daily, so these figures move with the zone. 8 .koeln domains are in the free NetAPI Top 1M. See the Top 1M list. 1 .koeln domains are currently listed in the compromised domains feed (0.006% of the zone). See the TLD abuse report.

Frequently Asked Questions

See our FAQ for more answers.

Can I download sample datasets for the .koeln zone?

Yes. Download a sample .koeln domain list or a sample .koeln dataset.

What is a basic domain list, and how does it differ from a detailed dataset?

Both cover the same 17,945 registered domain names in the .koeln zone. A basic list is one domain name per line in a gzip CSV. A detailed dataset adds DNS servers, server IP, hostname, emails, phone numbers, and more. See the dataset format details.

What are active and new domains?

Datasets for .koeln are updated daily. Active domains are all currently registered names in the zone. New domains are names added in the last 24 hours.

Can I download only newly registered .koeln domains?

Yes. The New domains list contains only the .koeln domains registered in the last 24 hours and is rebuilt every day. To download it manually, sign in and click the number in the New domains column of the download table on this page (the Download button next to it gets the full list of active domains). Through the API, call /api2/?method=download&zone_tld=koeln&dataset_type=list&filter_type=new&token=YOUR_API_TOKEN (dataset_type=dataset for the detailed dataset); see the API documentation.

What format and size is the file?

Every .koeln domain list and dataset is a CSV file compressed with gzip (.csv.gz): the basic list has one domain name per line, the detailed dataset has one row per domain with the columns described in the dataset format details. Compressed, the current .koeln basic list is about 85 KB and the detailed dataset about 334 KB. Any archiver opens gzip files, for example the free 7-Zip on Windows, and the API can also serve the files uncompressed (format=plain).

How do I automate daily downloads?

Schedule automatic downloads through the API. See the API documentation for authentication and endpoints.

Are emails and phone numbers available for every domain?

No. We collect contact details from public websites when available. Many domains have no published email or phone, and we do not guarantee these fields on every row. Do not use the data for unsolicited bulk outreach.

Related domain zones

Other zones you can download alongside .koeln โ€” lists and datasets in the same format.

Similar in size

Largest generic zones

Largest country-code zones

Additional .KOELN Zone / Registry Information

dotKoeln GmbH โ€” .koeln registry logo

Zone Registry: dotKoeln GmbH

Dispute Policy: link

Registry Policy: link

Data Privacy Policy: link

The .koeln domain is a geographic top-level domain for the city of Cologne (Kรถln), Germany, launched in 2014 together with its umlaut counterpart .kรถln. It is operated by dotKoeln GmbH, a registry backed by the local provider NetCologne.
.koeln is intended for businesses, organisations and residents connected to Cologne, but registration is open to anyone โ€” the registry relies on intent rather than residency checks. Local companies, clubs, the carnival community and the city itself use it for regional branding.

Top DNS providers / .koeln domain zone

Share of .koeln domains by nameserver provider.

Compromised .koeln Domains

Live compromised domain count per day (last 30 days).

The list of compromised domains in the .koeln zone can be downloaded here.

The full list of compromised domains can be downloaded here.

Chart Y-axis is scaled to the data range to show day-to-day changes (not from zero).

Based on this dataset and daily threat-intelligence signals. Domains may be listed after observed phishing, malware, spam, botnet, or similar activity; inclusion does not imply malicious intent by the owner, registrar, registry, or host. Updated daily; figures may change as new data arrives.

Questions? See our FAQ or contact us.

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