Opening a WHO File

The WHO file type is primarily associated with WhoIs++.

WHO	File extension: WHO
	File type:	Document

What is a WHO file

WHO files mostly belong to WhoIs++. IKNOWDOC is the reference record format for MCNC/CNIDR's Whois++ implementation. It is basically a colon-based document type: first there is a one-word field, a colon, then the information for that field.

How can I open a WHO file?

You need a suitable software like WhoIs++ to open a WHO file. You need a suitable software like WhoIs++ to open a WHO file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your WHO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a WHO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online WHO Text Viewer

Choose your .who file to analyze

or drag and drop it here

Online File Viewer

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Can't Open Your .WHO File? Try These Steps

Because .WHO files can originate from various programs, they aren't universally openable.

Identify the Source: Receiving this from a network administrator or directory service often suggests a WhoIs++ document.
Check the Header: Open the file in a text editor or hex viewer to inspect the first bytes:
- Plain text suggests a standard WhoIs++ query result.
- "PK" indicates a zipped archive.
- XML or JSON formatting implies structured application data.
Use the Original Software: Opening it usually requires the original program, such as a WhoIs++ client or an application/x-iknow compatible tool; if uncertain, ask the sender.
Use this Webpage: Drag and drop your file onto this page to detect its format, extract readable text/metadata, and preview its contents.

Technical Data for WHO File Extension

Related files:

whois++, ftr, vmm

Related links:

Format Description

Mime type:

application/x-iknow

a who Document is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with WHO files

Associate the WHO file extension with the correct application.
Update your software that should actually open documents. Because only the current version supports the latest WHO file format. Search, therefore, e.g. on the manufacturer website after an available WhoIs++ update.
To make sure that your WHO file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .WHO file online - secure, fast, and no downloads needed.