Is the OrgUnitTypeId for CourseOffering is fixed for all D2l Instances??

OrgUnitType Id for Course offering is "3" for my installation. Is it fixed for all D2L installation or it depends on the D2L installation. I want to filter organization of Course Offering type since https://docs.valence.desire2learn.com/res/orgunit.html#get--d2l-api-lp-(version)-outypes- this API is not authorized for Student, Is there any way to get the orgUnitTypeId for Course Offering??