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: SPFDMAWONMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
413-935 6 Longmeadow MA 624H ONVOY SPECTRUM, LLC 126   2022-02-04   
413-944 1 Blandford MA 624H ONVOY SPECTRUM, LLC 126   2022-02-25   
413-944 4 Blandford MA 624H ONVOY SPECTRUM, LLC 126   2020-11-30   
413-946 4 Hinsdale MA 624H ONVOY SPECTRUM, LLC 126   2022-02-25   
413-994 3 Charlemont MA 624H ONVOY SPECTRUM, LLC 126   2022-02-25   
413-994 9 Charlemont MA 624H ONVOY SPECTRUM, LLC 126   2020-11-30   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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