An AAAA record is an IP address within the newly introduced IPv6 format and it is made up of eight different groups of hexadecimal numbers, in contrast to the IPv4 IPs, that include four groups 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 number of IPs that could be created is many times larger than the number of the IPv4 addresses. Every single domain name has its web hosting server IP address as a record and in essence, that record instructs the domain name where the Internet site for it can be found. Depending on the system that the provider uses, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record allows you to host your website with one provider and your emails with another, so if you choose to use such a redirection to point a domain to a server that uses an IPv6 address, you'll need to create an AAAA record for it.