How to check if google voice number

- How to check if a google voice number is available
- How to check if i have a google voice number
- How to check if someone has a google voice number
- How to check if a phone number is a google voice number
- How to check if my number is linked to google voice
- How to check if my number can be ported to google voice
- Google voice sign up
- How to get google phone number