The Do Not Call (DNC) register is a list of people who have indicated that they do not want to receive commercial calls. Keeping such lists is fairly prevalent in many nations, making DNC compliance a critical component of most firms' plans. It is a feature in call center software that helps agents take calls from specific numbers. The agents can use the DNC feature to create a list of numbers from which they do not want to receive any calls. This is often used as a way to stop telemarketing calls as well as other unwanted phone calls from happening.