---
title: "Number recycle"
description: "Checks whether there has been a change in the user associated with the phone number after a specified date"
url: "https://developer.pxg.konera.com/guides/available-apis/number-recycle"
image: "https://developer.pxg.konera.com/_og/d/c_Ocean.takumi,title_Number+recycle,description_Checks+whether+there+has+been+a+change+in+the+user+associated+with+the+phone+number+after+a+specified+date,props_eyJ0aGVtZSI6eyJtb2RlIjoiZGFyayIsImNvbG9ycyI6eyJwcmltYXJ5IjoiIzIyNGFjMCJ9fX0,p_Ii9ndWlkZXMvYXZhaWxhYmxlLWFwaXMvbnVtYmVyLXJlY3ljbGUi,s_SSGIbBL9TEz0LpWd.png"
---

# Number recycle

## [Benefit](#benefit)

Avoid wrongfully delivered SMS communication by identifying new users of previously used phone numbers. The API checks whether there has been a change in the user associated with the phone number after the specified date.

## [Variants](#variants)

-   **Number recycle**: See a change in phone number ownership since a provided date

## [Usecases](#usecases)

-   **Update user information**: Keep your contact information up to date by requesting an active phone number to replace recycled phone numbers in your database.
-   **Avoid communication reaching the wrong person**: Avoid sending privacy sensitive communication to the wrong person before sending SMS or outbound calling.
-   **Ensure important communication reaches the right person**: Exclude phone number changes before engaging in critical communication to your users.