The ZON file extension is related to the Collection Building software. The *.zon file contains lists of zone definitions.
ZON file extension - Collection Building custom zone file
What is zon file? How to open zon files?
File type specification:
The ZON file extension is associated with Verity Collection Building software.
The *.zon files contain lists of zone definitions such as HTML, SGML, and MIME file types,.