This is a multi-part RAR archive . You must have all related parts (part1, part2, etc.) in the same folder to successfully extract the single .nsp file inside.
Based on the file naming convention used by this source, the code typically serves as a shorthand or encrypted identifier for the game title. ASE-NSwTcH-[BASE]-NSP-(eShop)-Ziperto.part3.rar
The file is the third part of a split RAR archive containing a Nintendo Switch game in .nsp format . File Content Details This is a multi-part RAR archive
The tag "Ziperto" refers to the website from which the file was originally sourced. Game Identification ASE-NSwTcH-[BASE]-NSP-(eShop)-Ziperto.part3.rar
The .nsp (Nintendo Submission Package) extension indicates this is a digital "eShop" version of a game.