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Michael Rivera
About me
I've been testing international calling services since 2017, starting with a blog where I compared Skype Out, Google Voice and Viber Out rates. When a friend got charged $15 for a 30-minute call to his bank from Mexico, I started digging into toll-free calling rules — who pays, what works, what doesn't. Every fact on this site links to an official source (FCC, carrier, bank) with the date I checked it. I do not run ads or take payment for placements. One link is paid for by TwinPhone — I disclose it on every page where it appears. I live in Berlin and test calls on Chrome, Firefox and Safari.
Corrections: [email protected]
How I work
Every price, prefix and rule on this site links to the official page it came from, with the date I checked it. I do not claim test calls unless I publish the call log. When a source changes, I update the page and the date.
The ranking method is published on the home page and on About.