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.
Active Server Page Extended ASP.NET script. An aspx file extension is associated with Active Server Page Extended format used by Internet Information Services (IIS) web server with server side scripting language ASP.NET used to dynamically generate websites. Generated output from an .aspx page in your browser is common html page.
ASPX stands for Active Server Page Extended file. These files are often used for Web forms on the Internet. You can tell when your browser has reached one of these files by the .aspx extension that will appear at the end of the URL in the address bar.For example, if you were to arrive at a http://www.abc.com/form.aspx, you would know you were at an active server page.eveloped by Microsoft, these server-generated Web pages may often contain C# code or VBScript. The files are commonly created using Microsoft Visual Web Developer and are designed for use within Microsoft ASP.Net framework.