When applying for 2-3 letter second level domain it is recommended to follow that it refers uniquely to the abbreviation used by the applying organization. Second level domain cannot be registered if it has already been registered by someone else. As a general rule one organization can only register one domain. The subdomains of schools and other educational institutions usually have an .edu.ee ending. Non-profit organizations and societies can register a third level domain under .org.ee .
Private persons can register their domain under .pri.ee .
A well-grounded application is also needed in case an organisation is applying for a subdomain that does not cohere with its' name. Also the period of time should be fixed during which the two parallel second level domains will be used. An organization applying for a second level domain is liable for the presented information and that it corresponds to the law and good practices. This responsibility stays with the applicant also after the subdomain is registered. In case the applicant has presented false data the hostmaster may annul the registered domain.