Is CFD an OTC derivative?

Could you please elaborate on whether CFD, or Contract for Difference, qualifies as an OTC derivative? I'm curious to understand how it compares to other financial instruments in terms of its trading characteristics and risk profile. Is CFD typically traded over-the-counter, and if so, what are the implications for investors and traders? Also, could you discuss any regulatory considerations surrounding CFD trading, especially in the context of OTC derivatives? Thank you for your insights on this topic.