ICANN, the organization responsible for the management of global domain registration system, has published, on its website, the Draft Applicant Guidebook describing the concept, conditions and procedures relating to the registration of the top-level domains name (gTLD) - for example, such as .google or .microsoft. Now, you can comment on documentation and propose possible changes. Currently, it is possible to register domains with 21 gTLD extensions, such as, for example .com or .net.