As a noun, “naturally-generated phone numbers” (Nat Gen phone numbers) are unique, randomly generated phone numbers that mimic the format of real phone numbers. For instance, the number “555-123-4567” is a Nat Gen phone number because it resembles a valid U.S. phone number.
Nat Gen phone numbers hold significance in protecting communication privacy. They offer benefits such as reducing spam and phishing attempts. Historically, their development was influenced by the rise of robocalls, leading to technological advancements in phone number generation and validation.