We've dug a bit deeper into some of the more common issues our users are reporting. A few users reported "number used too many times" errors or something very similar. The number we provide is private and only used once per service. If we allowed a number to be used multiple times per service, can you imagine how many users would be reporting this issue? There would be no benefit for us to do this. We ran some tests. We worked with one of our clients and used the same number they reported an issue with on Google. Using the same number they reported with this issue, we were able to successfully register on Google with it. The only difference? A clean IP address. I can't stress the importance of using a clean proxied IP address. It makes all the difference, especially if you are using our API and automating account creation. Is this always the case? Probably not, but more often than not, it is. With the spotlight on "fake" Facebook accounts and Google accounts nowadays, they are cracking down hard. Just wanted to pass this info along. Thanks for trying our service, and let us know if you run into any problems.