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.
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Switch: HRFRCTBCDS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
959-999 A Hartford CT 639C ONVOY, LLC - CT 920      
959-999 3 Hartford CT 639C ONVOY, LLC - CT 920   2015-02-21   
959-999 6 Hartford CT 639C ONVOY, LLC - CT 920   2015-07-31   
959-999 7 Hartford CT 639C ONVOY, LLC - CT 920   2015-07-31   
959-999 8 Hartford CT 639C ONVOY, LLC - CT 920   2015-07-31   
959-999 9 Hartford CT 639C ONVOY, LLC - CT 920   2014-12-01   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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