Here's how to enable Nomorobo on CenturyLink Digital Home Phone:
1. Please call CenturyLink at 844-208-3644 or 866-952-1695. A CenturyLink agent will open a ticket to have the Simultaneous Ring feature added to your Digital Home Phone service to work with Nomorobo.
2. After you've completed those steps, and CenturyLink has confirmed activation, go back to your Nomorobo Account.
3. Your number will now be listed as "Protected".