The chart and list indicate which are those most popular top level domains on the internet, and the relative percentage is estimated to be their corresponding market share, the top ten root domain extensions have about 80% of the whole market.
As our records show that there are a few hundreds (673) root domains, most of them are very small, .com tops the list and has the largest share of about 39% of it, .tk, .ru, .net, .org are among the top five most registered root domains.
.com, .net, and .org are well known, no surprise that they are in the top. The black horse here is .tk, many people might not know the .tk domain extension, it is the second largest registered TLD, and it is the internet country code top-level domain (iccTLD) for Tokelau, a small island of New Zealand in the South Pacific. Dot TK is the only top level domain name registry that provides free domain names, this might be the main reason that .tk made to the top.
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