Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 401 [Rate centres in NPA 401] [Dial plan for NPA 401]

NXX: 537

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-537 A Providence RI PRVDRINW4MD  4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130      
401-537 0 Providence RI   6889 OMNIPOINT MIAMI E LICENSE, LLC 130   2021-09-15   
401-537 1 Providence RI   4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130      
401-537 2 Providence RI   4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130   2014-10-24   
401-537 3 Providence RI   6389 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 130   2025-09-30   
401-537 4 Providence RI   318J COMCAST IP PHONE, LLC 130   2018-06-14   
401-537 5 Providence RI   977E ONVOY, LLC - RI 130   2022-11-03   
401-537 6 Providence RI   4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130   2015-12-13   
401-537 7 Providence RI   318J COMCAST IP PHONE, LLC 130   2019-08-01   
401-537 8 Providence RI   6389 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 130   2016-12-15   
401-537 9 Providence RI   6889 OMNIPOINT MIAMI E LICENSE, LLC 130   2021-09-15   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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