I receive a call from this number once a week. It is a recorded message is Spanish. I have no idea what she is saying, but after some research I found the following: This area code is used by Google for Google voice/Google SMS messaging/& Google talk. The entire state of Montana uses this area code. The recorded message translated, is telling me I have won a free trip to Miami or California if I press 9. (i have yet to try this)
That's all I got. hopefully this will generate more info. Thanks