Does the Sudo phone number support National and International calling? Meg - TeamSudo January 30, 2018 03:43 Updated Follow Yes! SudoApp supports select destinations for phone calls. Placing and receiving calls outside of these select destinations is not currently supported. Related articles How do I make an International Call from SudoApp? What countries can I call? Will my Sudo phone number ever expire? I'm unable to call a UK phone number Why is there a delay when I answer a call to when the other person can hear me? Comments 0 comments Article is closed for comments.