Sorry, there is no way to bulk create filters. They will need to be added in the usual way.
Okay thanks, but, does anyone know in which of the tables of the database are the filters indexed?
We intend to import to the table of the SQL database the excel that contains the subnets we´re working with. We want to work directly over the SQL database to index in the filter´s table all these subnets.
Sorry, I completely understand your situation, but it's not going to work and isn't supported. There is much more involved than modifying a table in a database. Filters have references to other things such as owners, sharing permissions, reports, etc. If you go ahead with your plan, you will be using an unsupported configuration. Even if you don't experience any problems right away, they could occur in the future, such as after an upgrade. If you try to escalate issues to support, you will be instructed to reinstall and start from the beginning.
I do empathize with your situation because I know it can be very tedious to manually enter all the filters, but it is the only solution.
Sroering, thanks very much anyway for your time and help.