Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 949

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-949 A Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-949 0 Annapolis MD   318J COMCAST IP PHONE, LLC 238   2006-08-13   
443-949 1 Annapolis MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-11-26   
443-949 2 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-10   
443-949 3 Annapolis MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-949 4 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-10   
443-949 5 Annapolis MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-02-02   
443-949 6 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-03-19   
443-949 7 Annapolis MD   318J COMCAST IP PHONE, LLC 238   2006-11-25   
443-949 8 Annapolis MD   318J COMCAST IP PHONE, LLC 238   2006-11-25   
443-949 9 Annapolis MD   318J COMCAST IP PHONE, LLC 238   2006-11-25   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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