An AAAA record is an IP within the newly introduced IPv6 format and it comprises of eight different sets of hexadecimal digits, in contrast to the IPv4 IPs, that include 4 sets of numbers in between 1 and 255. An illustration of an IPv6 address would be 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and with this format the sheer number of IPs that may be created is many times higher than the number of the IPv4 addresses. Every single domain has its hosting server Internet protocol as a record and in essence, that record tells the domain address where the Internet site for it is located. Depending on the system that the service provider employs, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record will allow you to host your Internet site with one company and your emails with a different one, so if you choose to use this kind of redirection to point a domain to a server that uses an IPv6 address, you will have to create an AAAA record for it.