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: BSTNMABOPS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
774-296 A Brockton MA 019F CBEYOND COMMUNICATIONS, LLC - MA 128   2010-03-15   
774-321 A Auburn MA 019F CBEYOND COMMUNICATIONS, LLC - MA 128   2010-03-15   
857-239 A Boston MA 019F CBEYOND COMMUNICATIONS, LLC - MA 128   2010-03-01   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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