AAAA is a domain address record, that is in essence the IPv6 address of the web server in which the domain name is hosted. The IPv6 system was introduced to replace the existing IPv4 system where each and every Internet protocol address is comprised of four sets of decimal numbers ranging from 1 to 255 e.g. 18.104.22.168. In contrast, an IPv6 address features 8 sets of 4 hexadecimal numbers - which range from 0 to 9 and from A to F. The reason behind this change is the substantially smaller selection of unique IPs which the present system supports and also the speedy increase of products that are connected to the Internet. An example of an IPv6 address is 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you wish to direct a domain to a server that uses this sort of an address, you will need to create an AAAA record for it, and not the widely used A record, that is an IPv4 address. The 2 records provide the very same function, but different notations are used, so as to identify the two types of addresses.