Reverse DNS records (commonly created via PTR / Pointer records) are records that map an IP address into a human-readable name (i.e. 126.96.36.199 -> massivedns.com).
An AAAA Record maps a human-readable hostname (i.e. massivedns.com – or – www.massivedns.com – or – store.massivedns.com) to an IPv6 address (i.e. 2001:0db8:85a3:0042:1000:8a2e:0370:7334)
AAAA Records live within your domain nameservers.