Top Level Domain

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A top-level domain or (TLD) are the letters that follow the final dot of the domain names.

There are several kinds of TLDs:

• Infrastructure: One TLD, the .arpa
• Countries: Usually they are codes with two letters according to the ISO 3166.
• Sponsored: They are promoted by collectives, organizations, the USA government or territories with its own language and culture.
• Generic: They are .com, .net, .org and .info.
• Generic restricted: .edu, .gov, .mil