A DNS record translates domain names into IP addresses.
Route 53 supports the following record types :
* A (IPv4 Address)
* AAAA (IPv6 Address)
* CNAME (Canonical Name)
* MX (Mail Exchange)
* NS (Name Server)
* PTR (Pointer Record)
* SOA (Start of Authority)
* SRV (Service Locator)
* TXT (Text Record)
* Alias (AWS-specific record).
