This specific naming pattern is common in "warez" or piracy communities. If you are looking for this file, it is usually found on dedicated Switch ROM sites or specialized subreddits.
: The file format (Nintendo Submission Package) used for installing games/updates on a Switch. ASNOBLIX-STALL-(USA)-NSwTcH-NSP-Update10441-Zip...
: Likely the release group or a shorthand for the game title. USA : The region for the software. NSwTcH : Shorthand for "Nintendo Switch." This specific naming pattern is common in "warez"