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.
ASP.NET is an open-source server-side Web application framework designed for Web development to produce dynamic Web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services. It was first released in January 2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft's Active Server Pages (ASP) technology.