How does one find the code for a Daewoo radio now that the company is gone?

I bought a 2001 Daewoo Leganza recently and had to change the battery. This disabled the radio which is now asking for a code. Since Daewoo doesnt exist anymore, how do I get a code for this thing?|||There should be a serial number sticker on the radio or they may be able to pull it from the vin number. Anyway you can call KIA motors for the radio code. 727-815-9611 is the number to the dealership near me, they have always helped me.