How to filter active WhatsApp numbers?
There are billions of phone numbers in the world but not all of them are on WhatsApp. To avoid wasting time and money to send messages to non-WhatsApp numbers, you must filter active WhatsApp numbers first. But how to filter them?

Firstly, you should have phone numbers list. If not, you can refer to wikipedia to find the list of country calling codes and try to find out area code and phone number format of the target area.
Second, download WhatsApp filter software ,such as WhatsApp Contacts Filter, and start to filter active WhatsApp numbers. WhatsApp Contacts Filter allows you to quickly filter out the active WhatsApp numbers and eliminates the non-active numbers from any area or list of numbers you upload.
Recommended Use 007Data
007Data, Generate different countrys phone number, filter active users list in social media, WhatsApp, Facebook, Instagram, Twitter, etc. by HiSeven
007Data has the following functions
Generate Number:Generate bulk phone number randomly
Global Coverage:You can choose the area of phone numbers you want to generate, we support most of contries phone segment for users.
Filter Social Media Users:Input phone number list and filter those are users of your targeted social media