08-08-2013 09:08 AM
The easiest way to update the area code on a group of contacts is to export that contact information to an excel file, make the changes, and re-import those contacts with duplicate checking enabled. This will let you update phone numbers without causing issue to other data.
08-09-2013 09:17 AM
There is no program that we've been able to find that will update area codes. There was a program that did this in a version of Act! from 10 years ago, but we haven't found an updated version of it. The best way to do this would be to export your contacts, make your changes, and import them back while merging data. Secondarily you can manually edit them as you go.