An AAAA record is an IP address in the recently introduced IPv6 format and it is comprised of eight different sets of hexadecimal digits, unlike the IPv4 IPs, which feature 4 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 in this format the amount of IPs which can be created is many times greater than the number of the IPv4 addresses. Every single domain name has its hosting server Internet protocol address as a record and in essence, that record instructs the domain name where the site for it is located. Depending on the system which the service provider employs, 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 choose to use this type of redirection to point a domain to a server that uses an IPv6 address, you will have to create an AAAA record for it.