Greetings, could you inform me whether a domain in the (.com) zone can be registered for an indefinite period? If not, what is the maximum duration allowed? Additionally, apart from a passport, what other requirements are necessary for registration?

No, you can't for life. As far as I know, the maximum for the domain zone .com is a period of 10 years. You can then renew your registration. As a rule, no other documents are required for individuals, it depends on the registrar company.

The registration of a domain in the .com zone is available to commercial entities without any current restrictions. The domain name can consist of between 2 and 63 characters and must begin and end with a Latin alphabet letter or number, with intermediate characters being either letters, numbers or hyphens. Extensions of the domain's validity are possible at any time for a period of between 1-10 years.

Following the specified "Expiration Date" field in the WhoIs service, the domain name will be removed from delegation the next day. After this occurs, there is a grace period of 30 days during which the client may renew the domain. However, should this period elapse, the domain is permanently deleted 5 days after the renewal date has passed.