The world's shortest domain names consist of a prefix of a single character and a suffix of two letters, with a total length of three characters. The prefix can be a number from 0 to 9 or a letter from a to z, with 36 options available; there are a total of 316 two-letter suffixes to choose from worldwide; the total number of three-character shortest domain names is 316*36=11,376, and the domain name 6.pe is one of them. If you are interested in the world's shortest domain names like me, hurry up and register one!