An AAAA record is an IP within the newly released IPv6 format and it comprises of 8 different groups of hexadecimal digits, unlike the IPv4 IPs, which include four groups of digits in between 1 and 255. A good example of an IPv6 address is 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and with this format the sheer number of IPs that can be created is many times larger than the number of the IPv4 addresses. Every single domain has its web hosting server IP as a record and in essence, that record instructs the domain where the site for it is. Depending on the system which the provider uses, the record will be called A (IPv4) or AAAA (IPv6). Changing this record permits you to host your website with one provider and your email messages with a different one, so if you decide to use this kind of redirection to forward a domain address to a server that uses an IPv6 address, you will have to create an AAAA record for it.