HOW TO TRACK WHATSAPP CONTACT NO. WITHOUT ANY TRICK OR HACK

So here I am going to share a new tutorial about whatsapp. Its a good tool to monitor someone.
Its a way to look at people's last seen even if they have hidden it, its a way to dox some one.. a much more advance level to look at last seen and history.
Simple and easy to use:-

1. Insert the number you want to monitor.
2. And then Here you go.
3. You can look at their last seen.
4. Get notified by a long viberation when they come online.
5. All in the form of best history.
6. Also, you could check someone's profile even if you already blocked them.
7. It shows how many minutes/hours they Have been on whatsapp.