Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: BSTPMALLBMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
339-240 4 Burlington MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-11-07   
617-806 5 Cambridge MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-11-07   
781-685 8 Burlington MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-12-11   
781-755 1 Waltham MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-11-07   
781-768 2 Waltham MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-12-11   
857-491 A Boston MA 814J LIGHTPATH OF NEW ENGLAND 128      
857-491 5 Boston MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-11-07   
857-491 6 Boston MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-11-07   
857-706 7 Cambridge MA 814J LIGHTPATH OF NEW ENGLAND 128   2021-12-01   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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