An AAAA record is an IP within the recently introduced IPv6 format and it is comprised of 8 sets of hexadecimal digits, as opposed to the IPv4 IPs, which include four 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 in this format the amount of IPs which can be created is many times higher than the number of the IPv4 addresses. Every domain name has its hosting server IP address as a record and in essence, this record instructs the domain where the Internet site for it can be found. Depending on the system that the company employs, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record allows you to host your Internet site with one company 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 create an AAAA record for it.