All Plivo, phone numbers are held in an inactivity pool for a 15 days period before it is returned to the carrier. During this time, inactive phone numbers are blocked and do not appear in phone number searches.
Please note that there are circumstances where carriers have recalled phone numbers prior to the time interval mentioned, in which case, we will not be able to recover your un-rented phone number.
However, to request an un-rented phone number to be added back to your account, please create a support ticket along with the number(s) to be added. Our Phone Number procurement team will try to retrieve the phone numbers for you.