Can I apply for any kind of gTLD or are there any specific restrictions?
ICANN has a set of specific rules for gTLD strings that each applicant must carefully consider. For example, an application for a gTLD composed of numbers only will be rejected. Applicants for IDN gTLDs must carefully follow the additional technical specifications for IDNs as outlined in the Applicant Guidebook. Applicants representing a community-based TLD or a geographic TLD must meet additional specific requirements.