Service for sending SMS with the same prices for the countries of the former CIS?

Question

SMS

I need to send an SMS code to the user to confirm the login. The user may be in Ukraine, Russia, Belarus, etc.
If we take the sms.ru service, then prices for Ukraine are already starting to rise, Ukrainian services are making it more expensive for Russia. Is there any service that has reasonable prices? Or, depending on the country of the user, send a request to different services? For example, if a person is from Russia, then send a request to the sms.ru api server, for Ukrainians to another service, etc.?