A 301 redirect is a permanent substitution of the address initially requested by the address obtained.
A 301 redirect is also called a web redirection or permanent redirection (moved permanently). A permanent redirection forces your web browser in charge of viewing content at a given address on the Internet to present you with content from another web address.
To create a redirection on your domain name, open the "Domain Names" tab in your account, select your domain name, and click on "Domain Name Settings". Here select the "301 Redirection" tab and enter the URL of your redirection (http://...) before confirming.