One of the current problems with voicemail is correlating a voicemail with a phone number. This is particularly true when the phone number is blocked by Nomorobo. It would be nice if the call logs could either prefixed or suffixed the call location on the call logs with the associated phone number. Cross-reference would make it easier to handled the numbers with block lists.
FYI: I have my own list I keep which allows me to find clusters (numbers that have same prefixed digits, i.e. area codes, area codes and exchanges, etc.). This frees up slots in my call blocking lists. I also attempt to trim off Nomorobo numbers.