AAAA is a domain address record, that is basically the IPv6 address of the server where the domain is hosted. The IPv6 system was introduced to replace the current IPv4 system in which each Internet protocol address is comprised of four sets of decimal numbers between 1 to 255 e.g. 188.8.131.52. On the other hand, an IPv6 address has 8 groups of four hexadecimal digits - which range from 0 to 9 and from A to F. The main reason for this transformation is the tremendously smaller number of unique IPs which the present system supports as well as the rapid increase of units that are connected to the Internet. A good example of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you need to point a domain to a server which uses such an address, you will need to create an AAAA record for it, and not the commonly used A record, which is an IPv4 address. The 2 records provide the exact same function, but different notations are used, in order to distinguish the two types of addresses.