in case you live here,
stick with the advice from Ken.
i have a phonage, too,
30 bucks per month plan,
unlimited in and out calls to the US and Canada and several european countries, they have different world plans available in case you need to call several countries once in a while.
mine is a 305, that's a Miami area code.
they are available for nearly all area codes, so you decide where you wanna be connected.
JD,
so said it about orange which i don;t have(just a little backup plan on the wife's cell phone, in case mine stops to work for what ever reason), but i can say the same about my own cellphone connected as a fix plan with Claro/verizon/codetel(whatever their actual name may be, lol), calls to the US and Canada are on mine even cheaper than calling a cell phone here in the country.
so if the question is asked for holiday purposes, use your own cell phone, take a local chip in, block your outbound ID and nobody knows where you are calling from.
somebody mentioned 40 pesos per minute in a prior post,
i would cancel my contract on such rates, i pay actually around 5 pesos per minute including taxes from my cellphone to any phone within the US and Canada, around 15 pesos per minute for calls to europe(landbased phones or cell phones the same rates). and those rates are not that new, i use that plan since very long years, sure it's going up once in a while, when started i paid 1 peso plus tax per minute to the US and Canada.
good luck
Mike