Your CSC code will be over written every time you flash a new ROM, usually, with the CSC code that ROM is based on.
Looking back on your posts you have rooted and flashed a number of ROM's in the last month.
However, I note from your very first post on AF,
here, that
Slug refers you to the, "
Rooting Galaxy S2 - A Dummies Guide", which, if you followed it, contains the following tip in post #2:-
"
Tip: Now is a good time to make a note of your phone's, "Version" in case you ever need to revert back from rooting. To do this, open the dial pad and type in the following:- *#1234#
This will give you 4 lines of information about your phones firmware and CSC code, etc: You should make a careful note of all this information and keep it somewhere safe."
So hopefully you may have your original CSC code written down somewhere.
Other than that, you can make an educated guess at your CSC code if your phone was, say, carrier branded originally. For example... Vodafone UK = VOD, SingTel Singapore = OLB, Orange Spain = AMN, and so on.