I just bought a VPN and I just want to make sure it is working properly. Is "What Is My IP" good enough to check? Also, now will my network admin be able to see I am using a VPN? Any chance they can see what I am doing while connected? 
I use I use VPN- it will show:
- IP Address
- DNS Address (this site detected a DNS leak on my system that others missed)
- WebRTC leaks
- Torrent IP address