Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-306 7 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-10-22   
240-306 8 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-10-22   
240-308 A Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 0 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 1 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 2 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-308 3 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2013-07-12   
240-308 4 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2014-05-11   
240-308 5 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-03-11   
240-308 9 Damascus MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-328 0 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2004-01-13   
240-328 2 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2004-08-21   
240-328 3 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-07-04   
240-328 7 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-03-14   
240-328 8 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-08-10   
240-338 4 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-02-04   
240-338 5 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-02-04   
240-338 6 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-02-04   
240-338 7 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-02-04   
240-338 8 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-02-04   
240-340 4 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-25   
240-340 5 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-25   
240-340 6 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-25   
240-340 7 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-07-25   
240-340 8 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-06-01   
240-340 9 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-12-04   
240-361 7 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-01-28   
240-361 8 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-01-28   
240-364 4 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2007-10-17   
240-377 1 Indian Head MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-07-30   
240-377 6 Indian Head MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-02-02   
240-377 7 Indian Head MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-11-06   
240-381 A Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-383 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-383 0 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-383 2 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-383 6 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-383 7 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-383 8 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-383 9 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-388 5 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2007-12-03   
240-393 5 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-11-04   
240-393 6 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-10-07   
240-393 7 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-10-07   
240-393 8 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-04-21   
240-393 9 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2003-04-21   
240-400 2 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-400 5 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-400 6 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-400 8 Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-06-01   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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