An AAAA record is an IP address in the newly launched IPv6 format and it comprises of 8 sets of hexadecimal digits, unlike the IPv4 IPs, that include 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 number of IPs that could be created is many times bigger 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 informs the domain name where the Internet site for it can be found. Depending on the system which the company uses, the record will be called A (IPv4) or AAAA (IPv6). Changing this record will allow you to host your Internet site with one provider and your emails with a different one, so if you choose to use this sort 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.