Computer Fleet management is not accessible to anyone, especially if it is a network. This requires expertise, experience and above all the right tools to complete all required tasks. The evolution of computing and technology has created software that can help you in this area. Net Mask is a program designed to manage IP addresses in a network. It is used to calculate masks and IP addresses to avoid conflicts and problems of duplication. It is capable of displaying the results of calculations in hexadecimal or binary according to the user’s needs. It also has an extensive online help.