AAAA is a domain name record, that is in essence the IPv6 address of the web server in which the domain is hosted. The IPv6 system was introduced to replace the current IPv4 system in which every single IP consists of four sets of decimal digits which range from 1 to 255 e.g. 126.96.36.199. In comparison, an IPv6 address has 8 sets of four hexadecimal numbers - from 0 to 9 and from A to F. The reason behind this modification is the considerably smaller selection of unique IPs the present system supports as well as the speedy increase of gadgets which are connected to the world wide web. A good example of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you want to direct a domain address to a web server which uses this sort of an address, you need to create an AAAA record for it, and not the widely used A record, which is an IPv4 address. Both records provide the very same function, yet different notations are used, to differentiate the two sorts of addresses.