SOLUTION: Apple iPhone XR/XS,/XS Max Caller ID Displaying Displaying Digits for Caller ID Blocked Calls
In certain circumstances, incoming calls may display the caller ID as 774-828-368-6237 or 865-6696 rather than the expected "No Caller ID". These calls originate from a customer that has their caller ID permanently blocked or has used the *67 code to block caller ID on a specific call.
Sprint is aware of this issue and are working to have this corrected. Date: To Be Determined