Mohannad,
The database structure is fairly complicated. In this case, you are looking at a view, which as a query based on other tables. We cover the database in some detail in the Custom Reporting class from Genesys Beyond.
In this case, the columns in question are really linked to the structure of an 11-digit NANP number.
From your other posts, I believe you are looking to report on where calls originate? The first thing you need to do is to look at what your telco is sending you. You many also want to configure your gateway / SBC to reformat the number. You can then use a Handler to extract the various components into custom attributes, which you can customize the reports for to write to the Custom table. Finally, you can create a report, using Crystal.