The document discusses the 518-area code region in Massachusetts known as the North Shore. It provides a brief history of how the area code was established in 1947 and originally covered most of eastern Massachusetts. Over the years, the region covered by the 518 area code shrank as the population grew and new area codes were added to accommodate more phone lines. Now the 518 area code solely covers a region known as the North Shore of Massachusetts, including communities like Salem, Beverly and Gloucester.

1. http://www.authorstream.com/Presentation/mireille30100-1649479-518-aren-39-cute/

55. mireille30100