> you can never know when that happens There's work being done to address that: https://www.fcc.gov/reassigned-numbers-database https://www.fcc.gov/reassigned

> you can never know when that happens There's work being done to address that: https://www.fcc.gov/reassigned-numbers-database https://www.fcc.gov/reassigned-numbers-database https://www.reassigned.us/ https://www.reassigned.us/