Domain Name Size Limit. A full domain name is limited to 255 octets including the separators The full domain name may not exceed a total length of 253 characters in its external dotted-label specification. Number of fields in a table.
Number of characters in a Short Text field. The length of the domain name passed in is 63163163162254 characters just under the length limit of 255. Tue May 1 2012 at 106 AM.
Its not a law or penalty that a domain should be less than or equal to 20 characters.
3-255 characters a-z A-Z 0-9 _ - and Domains per account. Addison Sep 21 2017. 127 characters plus 126 dots have a total length of 253. You can set this to 0 to make it unlimited.