iCloud Status check

Hello,

I have a question for unlockers, how can you be 100% sure of the iCloud status ? (Clean / Lost / Erased).
Because it happen some times a customer ask me to unlock an iPhone and my report is different of his report, so I check on more unlock servers and I get different results, example:

Hangunlock: LOST
Dreamsunlock: LOST OR STOLEN OR ERASED
Paidunlock: CLEAN / GSM CLEAN

How is it possible ?

Thank’s