Solutions for TLD registries and DNS operators

Domain Kit is a set of software tools and services for domain registries and DNS operators.


With our software, we've got your domain's back.

We run ccTLD registry of the Czech Republic and develop related software as a service.

Our common goal is to ensure stable and safe operation of your domain or DNS infrastructure and boost their development.


Explore what Domain Kit is

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Domain Registry

Professional software that allows you to manage a whole registry of any size.

Explore FRED

DNS Software

DNS Software

Operation of authoritative DNS servers through our widely used software.

Explore Knot DNS

DNS Anycast

DNS Anycast

Strengthening and accelerating DNS by providing the capacity of our servers.

Explore DNS Anycast

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DNS Statistics

Monitoring and evaluation of DNS traffic, detection of DNS infrastructure weaknesses.

Explore ADAM

Tailor-made service for your domain business.

We know that one size does not fit all. We can take 100% responsibility for the operation of the domain registry, but also leave it all to you and just provide extensive support.

Keep it in-house

We realize you might want to have full control over your infrastructure, but at the same time, it's reassuring to have someone who can provide good advice and quickly solve any problem.

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If you do not have enough capacity to manage the infrastructure or its parts and want to invest time in other areas of your business, we can take care of everything.

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How are clients satisfied with Domain Kit

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"CZ.NIC is a very good business partner. Every issue DENIC and CZ.NIC investigated together was processed professionally and fixed very quickly. KNOT DNS software is easy to use, with highest performance and stability. Also in the ADAM product line, working with CZ.NIC is very productive and straightforward. DENIC thanks CZ.NIC for the good collaboration in the past and is excited to continue in the future."

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About DNS Anycast

"The ability to work with multiple independent DNS service providers is important from the point of view of ensuring the security and resilience of our registry. We are glad that the CZ.NIC association has become one of the members of our global DNS network partners and we look forward to further cooperation."

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About FRED

"A good CZ.NIC reputation in the field of software development and many advantages of FRED has led us to choose FRED software for running our .ar domain registry among other options. We especially appreciate the stability and accuracy of the software and a very good level of support. Another FRED advantage is its modularity and many available features."

About us

Made in CZ.NIC

20+ years of experience

At CZ.NIC, the .CZ TLD registry, we take advantage of deep know-how in the field of domain management, DNS and SaaS development we have gained in more than 20 years of our existence. Our services and support programs are already used by dozens of clients from all corners of the world.

Domain Kit - CZ.NIC Headquarters Illustration

HQ in Prague, Czech Republic

Strategic position in the heart of Europe.

CZ.NIC, z. s. p. o.
Milesovska 1136/5
130 00 Prague
Czech Republic

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Meet our CTO

We are actively using all pieces of Domain Kit for operating of CZ domain which contains nearly 1.5 million domains. We perfectly know what is required for registry backend, for DNS architecture or monitoring and statistics above that. We are not afraid to develop, maintain and operate our own piece of software for all required parts (FRED, KNOT, ADAM) and make it available as an open source as well. You can either trust the provider or look into his kitchen. We can offer you the second option with a benefit of cooking together something what will be tasty especially for you.

CZ.NIC got the certification of the information security management system (ISMS), according to the ISO 27001 standard and is a proud member of:

Let's put your DNS into a better shape

Do not hesitate to request an offer or just contact us in order to get to know each other and discover our possibilities. There's always room for improvement.