AAAA is a domain name record, that's essentially the IPv6 address of the web server where the domain is hosted. The IPv6 system was intended to replace the current IPv4 system where each and every Internet protocol address is made up of four groups of decimal numbers between 1 to 255 e.g. 126.96.36.199. In contrast, an IPv6 address features eight groups of four hexadecimal digits - ranging from 0 to 9 and from A to F. The reason behind this transformation is the tremendously smaller selection of unique IPs which the current system supports as well as the speedy increase of products that are connected to the Internet. An example of an IPv6 address would be 2101:1f34:32e2:2415:1365:4f2b:2553:1345. If you need to forward a domain address to a server that uses this sort of an address, you'll have to set up an AAAA record for it, not the widespread A record, that is an IPv4 address. Both records deliver the same exact function, but different notations are used, so as to differentiate the two sorts of addresses.