They are Part 22 (service code CP (VHF/UHF paging)) "channels" that are licensed in a small chunk of spectrum over a designated area. Individual sites within that area and within that spectrum don't need to be listed. Generally speaking, and within reason, you do whatever you like with the spectrum within your service area.
This information pops up with a regular ULS search. I did a geographic search specifying the frequency within Los Angeles County.