An AAAA record is an IP in the recently launched IPv6 format and it is comprised of eight groups of hexadecimal digits, unlike the IPv4 IPs, which feature four groups of digits 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 amount of IPs that may be created is many times higher than the number of the IPv4 addresses. Every single domain has its hosting server IP address as a record and in essence, that record instructs the domain where the website for it is. Depending on the system the provider employs, the record will be called A (IPv4) or AAAA (IPv6). Changing this record enables you to host your site with one provider and your emails with a different one, so if you choose to use this type of redirection to forward a domain to a server that uses an IPv6 address, you will have to create an AAAA record for it.