.NNT File Extension

File Type:
Eudora Address Book File

Having trouble opening .nnt extension? Don't panic! This page explains what nnt files are as well as suggests programs you may use to open nnt files. You can download these programs through this page.

What is a NNT file?

Nnt file extension has Eudora Address Book file type, developed by QUALCOMM, which is associated with the "database files" category.

Eudora is an email agent, which is responsible for creating files with this extension. NNT files are address books used by this utility. They contain email contacts of the user: names, phone numbers, emails addresses, and nicknames. You can find NNT files as well as .TOC files in the "EUDORA" folder. As for today. Eudora software has been canceled. 

To learn how you can open the given file, read the information below.

nnt file icon
File Type:
Eudora Address Book File
Database Files

How to open NNT file?

Double click the nnt file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .nnt extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the nnt extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the nnt file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open NNT files

  • Windows Windows
    • QUALCOMM Eudora QUALCOMM Eudora
  • MacOS MacOS
    • QUALCOMM Eudora QUALCOMM Eudora

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the nnt file as well. Download Universal File Viewer for your OS.

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Download for Mac
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