Are you rooted?
It appears this gentleman is having the same issue.
What strikes me as odd is that we are all getting the 617 area code no matter our location.
I wanted to add that I have not added a single application for several days, so I do not believe it is associated with a particular app.
Have y'all tried dialing *228 and choose option 2. This not only updates your roaming but also your tower sets. I'm just wondering if that would fix the problem.
Yes it looks like a reset it going to be the answer. I will have to look into doing it as I am new to android. Do we then need to root again?
I am somewhat reluctant to do so (although I will have to see how easy it is) because if it is very time consuming as there is no telling how many times I may need to do it. I have now found many many stories cross the web of this exact same issue with the exact same area code. Seems to be somewhat common.
Like I said earlier, I got rid of the issue by wiping my phone and restoring only select apps that I really trusted. That's why I have a feeling it may be an app causing the issue.
You don't need to root again, just make sure to install a rooted stock rom or any other custom droid rom.