An AAAA record is an Internet protocol address in the newly launched IPv6 format and it is made up of 8 groups of hexadecimal digits, as opposed to the IPv4 IPs, that include 4 groups of digits between 1 and 255. An example of an IPv6 address would be 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and in this format the total number of IPs that can be created is many times higher than the number of the IPv4 addresses. Every domain has its hosting server IP as a record and in essence, this record informs the domain name where the Internet site for it is. Depending on the system which the company uses, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record will allow you to host your website with one company and your emails with a different one, so if you choose to use such a redirection to forward a domain address to a server that uses an IPv6 address, you will need to set up an AAAA record for it.