Domain Report 2019
CZ.NIC, z.s.p.o, is an interest association of legal entities, founded in 1998 by leading providers of Internet services in the Czech Republic. The principal duties and activities of the association include operation of the .CZ domain registry and DNS servers for the .CZ top-level domain (TLD).
The annual domain report is an on-line publication that offers key statistical facts about the status and dynamics of the Czech TLD. The graphs and tables are organised into several sections illustrating various aspects of the registry and domain operation.
Most charts are interactive: additional information can be obtained by placing the mouse cursor over graphical components of such a chart.
Domain reports from previous years are available from this page.
As a country code TLD, the domain .CZ is primarily used by Czech subjects – individuals and organisations. By the end of 2019, almost 1.33 million second-level domains were registered under .CZ. The following time series shows a characteristic S-shaped growth of the .CZ domain in the last two decades. A relatively slow start was followed by a period of an accelerated increase in domain counts. Since 2015, however, the curve clearly becomes saturated and will likely stagnate in the near future.
DNS domains live in the cyberspace, but they also have several links to the earthly geography. One of them is the address of the domain holder, as indicated in the .CZ registry. Naturally, most domain holders (1.23 million, i.e. 93%) have Czech addresses. The following table shows their distribution among 14 regions of the Czech Republic and also, which is perhaps more interesting, the number of domains per 100 citizens in each region. The map on the right shows the regional distribution of domain holders graphically.
| Region | Domains | Domains per 100 citizens |
|---|---|---|
| Praha | 403,453 | 30.6 |
| Jihomoravský | 149,736 | 12.6 |
| Středočeský | 123,937 | 9.0 |
| Moravskoslezský | 93,962 | 7.8 |
| Zlínský | 54,861 | 9.4 |
| Jihočeský | 52,565 | 8.2 |
| Ústecký | 49,311 | 6.0 |
| Pardubický | 46,579 | 8.9 |
| Královéhradecký | 46,459 | 8.4 |
| Olomoucký | 45,053 | 7.1 |
| Plzeňský | 40,167 | 6.8 |
| Liberecký | 36,304 | 8.2 |
| Vysočina | 34,939 | 6.9 |
| Karlovarský | 15,232 | 5.2 |
| Unknown | 41,197 | NA |
Approximately 7% of .CZ domains (exactly 94,062) have holders with addresses in countries outside the Czech Republic. Top ten of them are shown in the table below. It is not surprising that most foreign holders are based in Slovakia – till 1992 we shared the top-level domain .CS with our Slovak friends.
| Country | Domains | ||
|---|---|---|---|
 | Slovakia | 23,309 | 23309 |
 | Germany | 15,907 | 15907 |
 | United States | 9,328 | 9328 |
 | United Kingdom | 5,331 | 5331 |
 | Poland | 4,785 | 4785 |
 | Netherlands | 4,433 | 4433 |
 | France | 4,218 | 4218 |
 | China | 2,704 | 2704 |
 | Switzerland | 2,633 | 2633 |
 | Austria | 2,308 | 2308 |
| Others | 19,522 | 19522 |
The following zoomable map captures world-wide distribution of .CZ domain holder addresses. Interestingly enough, some .CZ domains are registered in countries like El Salvador, New Caledonia, Madagascar, and even Antarctica!