List of .cz Zone Domains
.cz Domain Zone Datasets
Download a .cz domain name list or a full dataset with DNS, server IP, emails, and phone numbers.
Zone TLD: .CZ
Zone type: country-code
Update frequency: monthly (last updated on June 12, 2026 )
Total domains monitored: 1,026,503
Tracked domains included in datasets: 1,026,503
Datasets available:
Basic Domain List
(download sample 💾)
Detailed Domain Dataset (download sample 💾)
The vertical axis uses only this chart's value range so small changes over time are easier to see.
Frequently Asked Questions
See our FAQ for more answers.
Can I download sample datasets for the .cz zone?
Yes. Download a sample .cz domain list or a sample .cz dataset.
What is a basic domain list, and how does it differ from a detailed dataset?
Both cover the same 1,026,503 registered domain names in the .cz 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.
Why are .cz datasets updated monthly?
The .cz zone is a country-code zone, and its registry zone file is not directly accessible. NetAPI discovers .cz domains through large-scale crawls and publishes consolidated monthly dataset builds.
How do I automate daily downloads?
Schedule automatic downloads with the NetAPI. 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.
Additional .CZ Zone / Registry Information
Czech businesses and individuals prefer the .cz domain due to its local versatility and high availability. It is operated and managed by the non-profit organization, the CZ.NIC. This domain extension is highly relevant within the Czech market, with over 10 million registered domains.
The .cz domain has no registration restrictions and is available to anyone around the World. Businesses must provide their tax registration number to adopt this domain name extension. It has no other strict eligibility criteria and is accessible to all kinds of local or international companies and individuals.
Here, you can download the list of .cz domains, as well as .tr domain zone lists, .sk domain zone lists, and others.
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.
Server UTC time: 01:05:47pm
Service Status Domain API Reports Terms of Service Privacy Policy Contact Us
Made with favorite in Cyprus