: Stands for Nintendo Submission Package . This is the native digital stock file format used for games installed directly onto the Switch's operating system.
It looks like you’re trying to manage or troubleshoot a multi-part file download for The Elder Scrolls V: Skyrim TESVSKYRM--USA--NSwTcH--BASE--NSP-Ziperto.part3...
: The name of the third-party website or group that hosted or uploaded the file. : Stands for Nintendo Submission Package