It seems you're asking about the file . This filename structure is a classic indicator of a multi-part archive created with WinRAR [1].
Splitting files is used to overcome file size limits on file-hosting sites, speed up downloads (by allowing parallel downloads), or make it easier to transfer large amounts of data, such as high-definition videos, software packages, or backups [2]. 0001-0020.part3.rar
If you attempt to extract the files and receive a "CRC error" or "unexpected end of archive," it usually means one of the parts (like part3 ) is corrupted or missing [1]. To help you further with this file, I need to know: Did you download this yourself , or did you receive it? It seems you're asking about the file
Here is an informative look into what that file represents and how it is used. The Anatomy of "0001-0020.part3.rar" If you attempt to extract the files and