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: BSTNMACO1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
339-230 8 Sharon MA 073H TELNYX LLC 128   2022-06-06   
774-399 1 Westboro MA 073H TELNYX LLC 128   2022-06-16   
774-491 A Mattapoisett MA 073H TELNYX LLC 128      
774-491 0 Mattapoisett MA 073H TELNYX LLC 128   2021-09-04   
857-394 0 Belmont MA 073H TELNYX LLC 128   2022-08-01   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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