You may choose any of the listed registrars. To register a domain name, you will be asked to provide the registrar you select with the various contact and technical information that makes up the registration. This registry provides other computers on the Internet the information necessary to send you e-mail or to find your web site. You will also be required to enter a registration contract with the registrar, which sets forth the terms under which your registration is accepted and will be maintained. Different registrars offer different means of submitting the information.
Most registrars offer web-based registration services.
Some offer registrations by telephone or mail. Many will work with your ISP to obtain the required information. You should go to the individual registrar's web site or otherwise contact it to determine the process it follows. Information about who is responsible for domain names is publicly available to allow rapid resolution of technical problems and to permit enforcement of consumer protection, trademark, and other laws. Each registrar has the flexibility to offer initial and renewal registrations in one-year increments, with a total registration period limit of ten years.