Top-level domain

domain at the highest level of the DNS hierarchy
(Redirected from Top level domain)

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[1]
  • Countries: Usually they are codes with two letters according to ISO 3166.
  • Sponsored: They are promoted by collectives, organizations, the US government or territories with its own language and culture.
  • Generic: They are .com, .net, .org and .info.
  • Generic restricted: .edu, .gov, .mil


  1. IANA -- .ARPA Zone Management - Retrieved December 10, 2010