OTA antenna ground to Cox Cable Coaxial cable?

I am in the process of terminating my Cox cable TV but keeping Cox internet and Cox Phone.   The coax enters the house where it splits to the cable modem and to the TVs. I am putting up an OTA antenna.  In the box on the side of the house where the Cox Cable has it's connections (that then go into the house) it is written "grounded at pole". I have an OTA Antenna I will put up. It says it needs to be grounded. Can I use the same ground the Cox Cable was using by connecting to the Cox Coaxial Cable outside the house? Thanks