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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NPA: 401 [Rate centres in NPA 401] [Dial plan for NPA 401]

NXX: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-233 A Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 0 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 1 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 2 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 3 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 4 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 5 Centredale RI PRVDRIWA0MD  508J CENTURYLINK COMMUNICATIONS LLC 130   2015-12-12   
401-233 6 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 7 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 8 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      
401-233 9 Centredale RI NPRVRIMSDS1  9102 VERIZON NEW ENGLAND INC. 130      

Last updated: Fri, 13 May 2022 22:16:13 UTC

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