AAAA is a domain record, that is essentially the IPv6 address of the server in which the domain is hosted. The IPv6 system was introduced to replace the current IPv4 system where every single IP is comprised of 4 groups of decimal numbers ranging from 1 to 255 e.g. 5.168.208.143. In comparison, an IPv6 address features 8 groups of four hexadecimal digits - ranging from 0 to 9 and from A to F. The cause of this transformation is the significantly smaller range of unique IPs which the current system supports as well as the speedy increase of products that are connected to the world wide web. An illustration of an IPv6 address would be 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you'd like to direct a domain address to a server which uses such an address, you will need to create an AAAA record for it, not the widely used A record, that is an IPv4 address. The 2 records have the exact same function, but different notations are used, to separate the two forms of addresses.
