But fortunately I got this reply from Gizmo Call's CEO Michael Robertson:
Gizmo Call numbers last for 60 days
Free local numbers last for 60 days. That's 2 months which seems a long time to not hear from a friend.
We don't have any plans to erase them at that point, so the number should last even longer. It's more about making sure we don't commit to say they will last forever and then someone gets upset because they don't last forever.
This sounds OK to me. Given the small amount of calls between Peru and Germany I suppose that I will keep my number longer than just 60 days.
Thank you, Michael, for that!