An AAAA record is an IP in the freshly launched IPv6 format and it comprises of 8 groups of hexadecimal numbers, unlike the IPv4 IPs, which feature four sets of digits between 1 and 255. An illustration of an IPv6 address would be 3014:0d43:23a3:2354:1320:8f3b:2635:3254 and with this format the amount of IPs that can be created is many times larger than the number of the IPv4 addresses. Every domain has its web hosting server IP address as a record and in essence, this record instructs the domain name where the website for it can be found. Depending on the system which the provider uses, the record will be called A (IPv4) or AAAA (IPv6). Changing this record enables you to host your website with one provider and your emails with another, so if you choose to use this sort of redirection to forward a domain to a server that uses an IPv6 address, you'll have to create an AAAA record for it.