An AAAA record is an IP address in the newly introduced IPv6 format and it is made up of 8 sets of hexadecimal digits, as opposed to the IPv4 IPs, which feature 4 sets of digits in between 1 and 255. A good example of an IPv6 address is 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and in this format the sheer number of IPs that could be created is many times greater than the number of the IPv4 addresses. Every domain has its website hosting server IP address as a record and in essence, this record informs the domain where the website for it can be found. Depending on the system which the company uses, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record allows you to host your Internet site with one provider and your emails with a different one, so if you decide to use this kind of redirection to forward a domain name to a server that uses an IPv6 address, you will need to create an AAAA record for it.