An AAAA record is an Internet protocol address in the newly released IPv6 format and it consists of 8 sets of hexadecimal numbers, as opposed to the IPv4 IPs, that include four 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 amount of IPs which can be created is many times larger than the number of the IPv4 addresses. Every domain has its website hosting server IP as a record and in essence, this unique record informs the domain name where the Internet site for it is. Depending on the system the company uses, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record will allow you to host your site with one provider and your e-mails with a different one, so if you decide to use such a redirection to forward a domain address to a server that uses an IPv6 address, you'll have to set up an AAAA record for it.