its a cat and mouse game. lately I've found many websites show an error when I put in my Google Voice number for sms verification I don't know how the implemen

its a cat and mouse game. lately I've found many websites show an error when I put in my Google Voice number for sms verification I don't know how the implementation works, if theres a way to check for virtual vs. real number, but some sms verification service provider seems to have successfully implemented a filter on Google Voice