Doing away with google voice? – Google Voice Help
https://support.google.com/voice/thread/4923703?msgid=4971993
QT:{{”
As to reclaiming Google Voice numbers, I realize that there may be some confusion as to what constitutes use. Officially, “use” means that you perform one of the following activities within a six-month period:
Make an outbound call using the Google Voice number
Send a SMS using the Google Voice number
Answer a live call using the Google Voice number
Update your voicemail greeting or otherwise change Google Voice settings “}}