The sale of domain names under your own extension is always through accredited sales partners, the so-called registrars. These registrars have signed a contract with the extension provider (which is also called the registry).
Many registrars also provide their services to resellers. For this reason, a domain holder can choose from hundreds of parties to register a domain name, even if there are only a handful of officially accredited registrars in a country.
Dotlocal has a large network of national and international registrars and can therefore ensure that just almost every local hosting company can market your future domain extension.