I have one from Telcan.net. I use it primarily when I am out of the country. I forward my cell phones to the 800 number and then can forward that to a prepaid SIM in another country using the Telcan web interface. I gave the number to my dad when he was alive so that he could call me for free and always reach me. Dont have quite as much reason to have it since he died, but it is so cheap that I havent bothered to cancel it and it is nice when I am out of the country.