When you ask for someone's harmless KeyID(first 5 letters of key), you don't make a big fuss if they say no.
Also, it's sequential, it's a series of 34-35 characters, and a few other characters I can't find out
Order: A-Z 0-9
ID
0: AAAAA
1: AAAAB
35: AAABA(maybe)
150: AAAEY