Area codes 781 and 339

<p>Area code 781 and 339 are telephone <a href="/facts/Area_code/jaryReDv">area codes</a> in the <a href="/facts/North_American_Numbering_Plan/0QQ8v3ph">North American Numbering Plan</a> for the <a href="/facts/U.S._state/PFwcRIYQ">U.S. state</a> of <a href="/facts/Massachusetts/9uumCbFI">Massachusetts</a>. The numbering plan area consists of <a href="/facts/Boston/exjfn6xf">Boston</a>’s inner suburbs along the <a href="/facts/Massachusetts_Route_128/0s6jSBtG">Route 128</a> corridor, and some outer suburbs, especially in the <a href="/facts/South_Shore_(Massachusetts)/F7B32JkH">South Shore</a> region. Major cities and towns with the area code include <a href="/facts/Waltham%2c_Massachusetts/8URD13ks">Waltham</a>, <a href="/facts/Woburn%2c_Massachusetts/2nG6LrlM">Woburn</a>, <a href="/facts/Lynn%2c_Massachusetts/1AKeHMbQ">Lynn</a>, <a href="/facts/Weymouth%2c_Massachusetts/ybad2rkA">Weymouth</a> and <a href="/facts/Dedham%2c_Massachusetts/h57mzWXl">Dedham</a>. It was created as in an <a href="/facts/Area_code_split/naIyV2S2">area code split</a> of <a href="/facts/Area_code_617/bMGrMWKB">area code 617</a> on September 1, 1997. Use of 781 became mandatory February 1, 1998. Area code 339 is an <a href="/facts/Overlay_complex/faRNxFIj">overlay complex</a> code for the same service area, activated on May 2, 2001. Since then, <a href="/facts/Ten-digit_dialing/22AY5qgI">ten-digit dialing</a> has been mandatory.
</p><p>Some mobile telephone numbers assigned in the 1990s to rate centers in 781 and 339 kept the 617 area code just on those mobile lines after the split.
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Area codes 781 and 339 open-in-new

Area codes 781 and 339