Excellent work. Congratulations on shipping. If I could find a good Twilio alternative for other countries I might do something similar for another another country.
Was looking for Australia in particular. I was just searching for it and from the search results I thought they are not providing for Australia just yet but clicked on the link you gave me and seems like they actually do.
Tropo has Australian numbers. And 40 other countries. Has for years. http://tropo.com (disclosure, I'm the product manager).
But really, if all you're doing is dialing out, then you don't actually need a local number. Just use whatever service you want (us, Twilio, Plivo, someone else, etc) and set the caller ID to a local number or make the call as a blocked caller ID.
