Xfinity Mobile includes a free feature called Spam Detection. You can enhance this by downloading the Xfinity app to: Enable "Silence Unknown Callers" (via device settings).
Blocking a number on Xfinity is straightforward once you know where to look. For home phone users, the Xfinity Connect app is your best friend. For mobile users, your phone’s built-in blocking plus Xfinity’s Scam Protection covers almost all unwanted calls. xfinity block number
Here is a step-by-step guide on how to use Xfinity’s call blocking features, manage your blocked list, and unblock numbers when necessary. Xfinity Mobile includes a free feature called Spam Detection
: Go to Settings → Phone → Blocked Contacts . manage your blocked list