An AAAA record is an IP address within the freshly introduced IPv6 format and it consists of eight different groups of hexadecimal numbers, unlike the IPv4 IPs, that 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 greater than the number of the IPv4 addresses. Each domain name has its web hosting server IP as a record and in essence, that record informs the domain name where the Internet site for it is. Depending on the system which the service provider uses, the record will be called A (IPv4) or AAAA (IPv6). Changing this record allows you to host your site with one provider and your emails with a different one, so if you decide to use this type of redirection to forward a domain to a server that uses an IPv6 address, you'll have to set up an AAAA record for it.