A phone number is a series of digits assigned to a particular telephone line. Normally, a phone number is used to identify the destination of a telephone call. For example, the Volaris Airlines phone number is +1 (855) 865-2747.
Phone numbers are important for businesses as they provide a direct line of communication with customers. Customers can use phone numbers to inquire about products or services, make reservations, or get support. Historically, phone numbers were assigned to landlines, but with the advent of mobile phones, phone numbers can now be assigned to mobile devices as well.