An AAAA record is an IP address in the freshly released IPv6 format and it comprises of eight sets of hexadecimal numbers, as opposed to the IPv4 IPs, which feature four groups of numbers between 1 and 255. An illustration of an IPv6 address is 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and with this format the total number of IPs which can be created is many times larger than the number of the IPv4 addresses. Each domain name has its hosting server IP address as a record and in essence, this unique record tells the domain name where the website for it can be found. Depending on the system the provider employs, the record will be called A (IPv4) or AAAA (IPv6). Changing this record allows you to host your website with one company and your emails with a different one, so if you choose to use this type of redirection to point a domain name to a server that uses an IPv6 address, you'll have to create an AAAA record for it.