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: SOBYCTPZCM0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-370 A New Haven CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-412 A New Haven CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-657 A New Haven CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-670 A Waterbury CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-766 A New Haven CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-220 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-260 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-279 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-320 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-340 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-588 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-699 A New London CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-720 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-802 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-842 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      
860-939 A Hartford CT 9748 AMERICAN MESSAGING SERVICES, LLC 920      

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

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