Someone stated in another thread that the account number is actually the last digits of the SIMID, the underlined portion that you used to activate the sim originally.
“A democracy will continue to exist up until the time that voters discover
that they can vote themselves generous gifts from the public treasury.
From that moment on, the majority always votes for the candidates
who promise the most benefits from the public treasury,
with the result that every democracy will finally collapse
due to loose fiscal policy, which is always followed by a dictatorship”