AAAA is a domain address record, that is basically the IPv6 address of the server where the domain name is hosted. The IPv6 system was intended to replace the current IPv4 system in which every IP address consists of 4 groups of decimal digits between 1 to 255 e.g. 18.104.22.168. In contrast, an IPv6 address includes 8 groups of four hexadecimal digits - from 0 to 9 and from A to F. The main reason for this modification is the significantly smaller range of unique IPs that the existing system supports and also the speedy increase of gadgets that are connected to the Internet. An illustration of an IPv6 address would be 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you want to direct a domain to a web server which uses this type of an address, you will have to create an AAAA record for it, not the widespread A record, that is an IPv4 address. Both records deliver the very same function, but different notations are used, so as to identify the two sorts of addresses.