An AAAA record is an IP address in the newly presented IPv6 format and it is comprised of 8 different sets of hexadecimal digits, as opposed to the IPv4 IPs, that include 4 groups of digits in between 1 and 255. An example of an IPv6 address is 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and in this format the number of IPs that may be created is many times larger than the number of the IPv4 addresses. Each and every domain name has its hosting server IP address as a record and in essence, this record instructs the domain where the site for it is located. Depending on the system the company uses, the record is going to be called A (IPv4) or AAAA (IPv6). Changing this record enables you to host your website with one company and your email messages with a different one, so if you decide to use this kind of redirection to point a domain to a server that uses an IPv6 address, you'll need to set up an AAAA record for it.