An ITIN (Individual Taxpayer Identification Number, sometimes called a PIN, Tax ID or Taxpayer ID) will serve as your identification number for filing your tax returns. If you do not qualify for an SSN, you will need to apply for an ITIN.
What is .ASPX File Extension? What is the purpose of the .aspx file extension? The .aspx (Active Server Page Extended) file extension stores script and source codes that allow web browsers to translate and open web pages. Typically, .aspx file extensions are associated with ASP.NET by Microsoft.
A file with the ASHX file extension is an ASP.NET Web Handler file that often holds references to other web pages used in an ASP.NET Web server application. The functions in the ASHX file are written in the C# programming language, and sometimes the references are so short that an ASHX file may end up just being a single line of code.