A domain check checks whether the domain entered in the search field is still free or already registered. A database query is started in the background for this purpose. The check only takes a few tenths of a second before you see the result. The domain name checker not only shows the result for the queried domain including its extension, but the tool also suggests various alternatives. This is very practical because these domain suggestions can be the basis for creative ideas. Classic country endings such as .com, .net, or .ca can be just right for your project. At the same time, the domain search also checks endings from various sectors, with which you can query and register the right domain combination. Sometimes you will be shown that a certain combination is already occupied or that it is "unavailable". This information is important for you because such a domain cannot be registered due to trademark law (to protect you from trademark infringement). It is best to choose an alternative from the list of suggestions.