If I need to get a number back for re-verfication is that possible after the number expires?

All the Verizon numbers we generate both for voice and smspins are randomly generated from Verizon, there is no way possible to request an old number.  

If you think re-verification may be an issue we have 60-day voice numbers you may buy here.

https://vipnlines.myshopify.com/collections/verizon-wireless-numbers/products/60-day-verizon-forwarded-phone-numbers-delivery-in-3-4-business-days?variant=27285877001