I can't find/what is my Key Prefix

The Key prefix is the 1-2 letter(s) on the key.  

If your key starts with        Choose this      

P	New-U-KryptoLok       then your model
F	New-U-Evolution          then your model
B	New-KryptoFlex         then your model
H	New-U-Keeper            then your model
D	Family:  Evolution     Model: Messenger       then your model