A 521 file extension is related to the Murray State University Trojan Ring. A 521 file contains configuration.
521 file extension - Murray State University Trojan Ring configuration data
What is 521 file? How to open 521 files?
File type specification:
The 521 file extension is associated with the Trojan Ring student computer network on Murray State University.
The 521 file contains configuration data.
The Murray State University Trojan Ring seems to be obsolete.
This 521 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.