AAAA is a domain address record, that's in essence the IPv6 address of the web server in which the domain name is hosted. The IPv6 system was introduced to replace the current IPv4 system where every Internet protocol address consists of four groups of decimal digits between 1 to 255 e.g. 5.168.208.143. On the other hand, an IPv6 address features 8 groups of 4 hexadecimal digits - from 0 to 9 and from A to F. The reason behind this modification is the considerably smaller number of unique IPs that the current system supports and also the speedy increase of units that 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 forward a domain address to a machine that uses this kind of an address, you have to create an AAAA record for it, not the widespread A record, that is an IPv4 address. Both records have the very same function, yet different notations are used, to distinguish the two sorts of addresses.