symbols explanation

I got some old morningstar information and i cant understand the symbols they are using.

for example - DXOY , @ESOY , ZCOY ...

i guss ESOY is for the S&P mini contract and the DXOY is for the DAX (because the exchange is EUREX)

does anyone know what the OY means ?
and where can I find a ticker list ?

thanks
 
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