AAAA is a domain address record, that's in essence the IPv6 address of the web server in which the domain is hosted. The IPv6 system was designed to replace the existing IPv4 system in which every single IP comprises of four sets of decimal digits which range from 1 to 255 e.g. 220.127.116.11. In contrast, an IPv6 address includes 8 groups of four hexadecimal numbers - ranging from 0 to 9 and from A to F. The reason for this transformation is the significantly smaller amount of unique IPs that the present system supports as well as the rapid increase of units which are connected to the world wide web. An illustration of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you need to direct a domain to a server which uses this sort of 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 two records deliver the very same function, but different notations are used, in order to differentiate the two sorts of addresses.