AAAA is a domain name record, which is in essence the IPv6 address of the server in which the domain is hosted. The IPv6 system was intended to replace the present IPv4 system in which each Internet protocol address comprises of 4 groups of decimal numbers ranging from 1 to 255 e.g. 5.168.208.143. On the other hand, an IPv6 address features eight sets of 4 hexadecimal numbers - ranging from 0 to 9 and from A to F. The main reason for this transformation is the considerably smaller range of unique IPs which the existing system supports as well as the speedy increase of products that are connected to the world wide web. An example of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you wish to direct a domain name to a server that uses this type of an address, you will have to set up an AAAA record for it, not the widely used A record, that is an IPv4 address. The two records have the same exact function, but different notations are used, to separate the two forms of addresses.