Please help - i forgot my nokia 3200 security code

Hi everyone. I have an old nokia 3200 which i stupidly changed then forgot my security number for. I can use my phone still, i just cant access alot of old phone numbers. Here are the numbers under the battery;
TYPE RH-30 FCCID:LJPRH-30 CODE 0516177 IC:661E-RH30 352519/00/465138/9

Can anyone give me a master code or something??? PLEASE!!!

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Hmm... I'm not really sure about it, but does resetting the phone help?