An AAAA record is an Internet protocol address within the freshly presented IPv6 format and it comprises of 8 different groups of hexadecimal numbers, as opposed to the IPv4 IPs, which include four sets of numbers in between 1 and 255. An example of an IPv6 address would be 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and with this format the sheer number of IPs that can be created is many times bigger than the number of the IPv4 addresses. Each and every domain name has its website hosting server IP as a record and in essence, that record informs the domain address where the Internet site for it is. Depending on the system which the company employs, the record will 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 decide to use this sort of redirection to point a domain name to a server that uses an IPv6 address, you'll have to set up an AAAA record for it.