An AAAA record is an IP within the newly presented IPv6 format and it is comprised of eight sets of hexadecimal numbers, as opposed to the IPv4 IPs, which include four sets of numbers between 1 and 255. An illustration of an IPv6 address is 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and in this format the sheer number of IPs that can be created is many times bigger than the number of the IPv4 addresses. Each domain has its website hosting server IP as a record and in essence, this unique record informs the domain address where the site for it is. Depending on the system which the provider employs, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record enables you to host your site with one company and your e-mails with a different one, so if you choose to use such a redirection to forward a domain to a server that uses an IPv6 address, you'll need to set up an AAAA record for it.