I use numbers for one-time activations and for long-term use. So far, the service has not let me down. It seems I've been lucky with the activations, as I've seen reviews mentioning that sometimes you get already used numbers. That hasn't happened to me; all the numbers have been new, and SMS come through without any issues. Everything is great with the long-term rental. I rented an American number for a month, which cost me 1500 rubles. Throughout the rental period, the number was available, and I could use it on any services and receive an unlimited number of SMS.