Domain Name Analyzer is a tool that helps us choose the best domain name for our website, because after we indicate the keywords we want to relate with it, it will offer us a list of possible names. After choosing the name we like most, we can check if the domain is available and buy it or it will give us the possibility to inquire who the owner is and if there's any possibility of purchasing it. To do so, it will give us the WHOIS information (owner information).
All the domains that Domain Name Analyzer searches for and offers are TLP or Top Level Domains, to make it clearer, all the ones that finish with two or three letters, indicating the type (.int, .com, .net, .org, etc.) and others corresponding countries or regions (.us, .co.uk, .es, etc.). Never second level domains like .com.ar for example.