Call/Message blocking on Iphone 11 Pro

Thank you for the speedy reply. I guess I should have also added the question "And is there a limit on how many numbers can be blocked using the 'block caller' function"? I ask this now because I think I've blocked significantly more callers than appear on my blocked caller list. Obviously I could be mistaken and will now count them up, manually transcribe the numbers, and see how the list changes going forward. Apple doesn't seem to offer any direct info on this vis a vis their official online support.