CountryCode Domains In addition to the global top-level domains, there are a whole bunch of two-level domains for the different countries of the world. Some of them let people register directly under them as second-level domains, while others have a more deeply nested structure. Some limit registrations to residents of the appropriate country, while others are open worldwide Lets you change your current e-mail provider and still keep the same e-mail address! Protect your Internet advertising investment from failure of your Internet Service Provider!