Domain name selection guidelines:
Domain name should have to be easy to remember, such as names that reflect the name of the organization. Example : The domain of T&T Firm may be like, tandtfirm.com
Each top level domain name is reserved for a specific purpose. Such as, .com is for commercial purpose, .org for non-profitable organizations etc.
Domain name can not contain blank spaces or unusual characters. Example : tnt publish books.com is not valid for blank spaces.
A domain name can be up to 24 characters long, including the period (.) and the three characters used for the top level domain. Example : yahoo.com is of 9 characters.