Caller ID

Caller ID is an ever-evolving puzzle including:

National Database (ring-u does this part for you)

Apple Database

Google Database

Bing Database

It is VITAL that you complete your Apple, Google, and Bing business listings or your Caller ID will not function/display correctly for all parties.
Make sure your business listings include all the phone numbers on your Dashboard.
The ring-u administered Caller ID can be edited by you at Numbers

Links for Apple and Google business listings:
Apple Business Connect
Google Business Profile
Bing Places for Business

Also, go to these pages and file your numbers as not spam. This is really important for any number that will call cell phones.
T-Mobile
Verizon
AT&T