These types of split archives are typically used to bypass file size limits on upload sites. You must have all parts (part01, part02, etc.) in the same folder to successfully extract the "piece" or content contained within them.
If you are trying to open this specific part, you will need the other 30 volumes to access the internal data. Untitled - Pastebin RRRDDD.part10.rar
Files with this naming convention are sometimes flagged in malware analysis reports or as strings in suspicious documents. These types of split archives are typically used
The file is part of a large multi-volume archive that appears to be associated with shared data sets or software packages often found on file-sharing platforms like Pastebin . Key Details About the Archive Untitled - Pastebin Files with this naming convention
It is part of a series containing at least 31 separate volumes (part01 through part31).