AAAA is a domain record, which is in essence the IPv6 address of the web server in which the domain name is hosted. The IPv6 system was intended to replace the present IPv4 system where every IP comprises of four groups of decimal digits which range from 1 to 255 e.g. 5.168.208.143. On the other hand, an IPv6 address features eight groups of 4 hexadecimal digits - ranging from 0 to 9 and from A to F. The reason for this modification is the considerably smaller number of unique IPs that the existing system supports and the rapid increase of gadgets which are connected to the world wide web. An example of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you need to point a domain name to a server which uses this type of an address, you have to create an AAAA record for it, and not the commonly used A record, that is an IPv4 address. The two records have the very same function, yet different notations are used, to identify the two sorts of addresses.