An rd1 file extension is related to the DATAIR. An rd1 file contains data.
RD1 file extension - DATAIR data
What is rd1 file? How to open rd1 files?
File type specification:
The rd1 file extension is associated with DATAIR, a retirement document system service, developed by DATAIR Employee Benefit Systems.
The rd1 file stores some kind of data used by DATAIR.