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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
NDC - Extension Details
Date Added: December 03, 2009
File Extension:  .NDC
Description 1: .NDC is the file extension tied to the Personal Communications Settings File. Files with the .NDC extension attached store configuration info that the IBM Communications networking program software makes use of. Such files often come with iSeries settings, Load the iSeries settings with the help of the iSeries Connection Configuration application (PCSNDC.EXE).
File Type:   Settings file
Mode: Binary
Program(s) to Open:  Windows: IBM Personal Communications
Common:
Extension: