AAAA is a domain name record, that's essentially the IPv6 address of the server where the domain name is hosted. The IPv6 system was intended to replace the current IPv4 system where each IP consists of four groups of decimal digits ranging from 1 to 255 e.g. 5.168.208.143. On the other hand, an IPv6 address includes eight sets of four hexadecimal numbers - from 0 to 9 and from A to F. The cause of this modification is the tremendously smaller selection of unique IPs which the current system supports as well as the speedy increase of products that are connected to the Internet. An illustration of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you need to point a domain address to a web server which uses this type of an address, you will have to set up an AAAA record for it, not the commonly used A record, that is an IPv4 address. Both records provide the same exact function, but different notations are used, to distinguish the two forms of addresses.