Area code 339

Area code 339 is a telephone area code in the North American Numbering Plan (NANP) for the Commonwealth of Massachusetts. It is an overlay code serving the same geographic region as Area code 781, covering numerous communities to the north, west, and south of Boston. The code was activated in 1998 to provide additional numbering capacity for the region's growing population and telecommunications needs, forming part of the state's complex area code system that also includes Area code 617, Area code 857, and Area code 351.

History and implementation

The need for area code 339 arose from the rapid exhaustion of telephone numbers within the original Area code 617 territory, which once served all of eastern Massachusetts. In 1988, the North American Numbering Plan Administrator (NANPA) split 617, creating Area code 508 for the central and southeastern parts of the state, including Worcester and Cape Cod. By the mid-1990s, the remaining 617 region, concentrated on the immediate Greater Boston area, was again nearing capacity. A second split in 1997 established area code 781 for the northern and western suburbs, leaving 617 for Boston and a few inner-ring communities like Cambridge and Chelsea. However, projections indicated that 781 would also be exhausted quickly due to the proliferation of cell phones, fax machines, and pagers. Consequently, the Massachusetts Department of Telecommunications and Energy approved an overlay plan, and area code 339 was activated on May 2, 1998, as the first overlay in the state, sharing the same geographic boundaries as 781.

Service area

Area code 339 serves a large and economically diverse portion of Greater Boston, encompassing parts of Middlesex, Norfolk, and Essex counties. Major municipalities within its territory include the historic cities of Lynn and Salem, the technology and education hub of Waltham, and affluent residential communities such as Wellesley, Lexington, and Marblehead. The region is home to significant institutions like Brandeis University, Bentley University, and the Middlesex Fells Reservation, and features key economic corridors along Interstate 95 and Route 1.

Overlay plans and relief

The implementation of area code 339 as an overlay, rather than another geographic split, set a precedent for future numbering relief in Massachusetts. This method avoided the massive disruption and cost associated with changing area codes for existing customers, a lesson learned from the contentious splits of 617. The continued demand for numbers eventually required further overlays across the region. In 2001, area code 857 was overlaid onto the 617 region, and in 2001, area code 351 was created as an overlay for the 978 territory. These decisions were overseen by the Federal Communications Commission (FCC) and state regulators, reflecting a national shift toward overlay plans to conserve numbering resources. The New England Telephone and Telegraph Company, later part of Verizon Communications, was a primary carrier implementing these changes.

Dialing procedures and central office codes

With the introduction of area code 339, the entire 781/339 region transitioned to mandatory ten-digit dialing (area code + seven-digit number) for all local calls. This requirement was a direct consequence of the overlay design, as two area codes now served identical geographic areas. The North American Numbering Plan administrator allocates central office codes (the first three digits of a seven-digit local number) to competing local exchange carriers like Verizon and Comcast for assignment. Notable central office prefixes within the 339 code are often associated with specific communities, though number portability between carriers and codes has made such geographic associations less rigid over time.

In popular culture

While not as frequently referenced as the iconic Area code 212 for New York City or Area code 310 for Los Angeles, area code 339 has appeared in various media contexts, often to establish a character's connection to the Boston suburbs. It has been mentioned in independent films set in New England and occasionally in the dialogue of television series like *Law & Order: Special Victims Unit* when referencing locations north of the city. The area code is also used by businesses and organizations in their branding to denote their regional presence, similar to how Area code 617 is used by entities in the city of Boston itself.

Category:Area codes in Massachusetts Category:1998 establishments in Massachusetts Category:North American Numbering Plan area codes