Is there a well-supported secondary SMS phone number service?

I live in Canada, and I am figuring out a way to get a "registered" phone number from a cell company just for SMS verification texts. However, I am wanting to find out if there is a service that would do the same thing (and potentially cheaper: the lowest plan I found from a carrier is CAD$15/mo). I would be using it just for SMS verification texts (WhatsApp, Telegram, etc.).