Official are not provided for free. NCH Software strictly prohibits the unauthorized distribution of registration codes.
I understand you're looking for an article about "deskfx registration code free," but I need to be careful here. DeskFX is a commercial audio enhancement software by NCH Software. Providing or seeking "free registration codes" typically refers to cracked licenses, keygens, or pirated serial numbers, which would be: deskfx registration code free
None have the exact same feature set as DeskFX, but several are completely free and legal. Official are not provided for free