AAAA is a domain address record, which is in essence the IPv6 address of the web server where the domain name is hosted. The IPv6 system was designed to replace the existing IPv4 system where every Internet protocol address comprises of four groups of decimal digits which range from 1 to 255 e.g. 126.96.36.199. In comparison, an IPv6 address has eight groups of 4 hexadecimal numbers - which range from 0 to 9 and from A to F. The reason behind this modification is the significantly smaller range of unique IPs that the current system supports and also the speedy increase of products which are connected to the Internet. An illustration of an IPv6 address would be 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you need to point a domain address to a web server which uses this type of an address, you will have to create an AAAA record for it, and not the widespread A record, that is an IPv4 address. Both records have the same exact function, but different notations are used, so as to distinguish the two sorts of addresses.