A compressed archive. You will need a tool like WinRAR or 7-Zip to extract it. How to Access the Content To see what is actually inside, follow these steps:
Because "DODIFHV" is likely an or a unique release group code rather than a standard commercial title, there is no official "review" of its contents. However, File Breakdown DODIFHV.part28.rar
If you are unsure how to manage multi-part archives, this guide demonstrates the extraction process: A compressed archive