An AAAA record is an Internet protocol address within the recently introduced IPv6 format and it is comprised of 8 different sets of hexadecimal numbers, unlike the IPv4 IPs, which include 4 sets of numbers between 1 and 255. An illustration of an IPv6 address is 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and in this format the amount of IPs that can be created is many times larger than the number of the IPv4 addresses. Every domain name has its website hosting server IP address as a record and in essence, this unique record instructs the domain name where the Internet site for it is located. Depending on the system which the provider uses, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record enables you to host your site with one provider and your email messages with a different one, so if you choose to use such a redirection to point a domain name to a server that uses an IPv6 address, you'll need to set up an AAAA record for it.