Numbers with this prefix were first introduced in 1994.While 3059728996 was originally issued with the info above, the owner of the phone number (305) 972-8996 may have transferred it through a process called porting.
Caller type: Unknown
The voicemail message is regarding online employment with Amazon. It sounds legitimate enough, but the information provided when I looked up the phone number causes me to be wary. I might return their call out of curiosity.