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
240-551 0 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 1 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 2 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 3 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 4 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 6 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 7 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-551 8 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-552 A Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-552 0 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-23   
240-552 1 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-23   
240-552 2 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-23   
240-552 3 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-23   
240-552 4 Washington Zone 10 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-23   
240-554 7 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-05-29   
240-564 0 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-02-24   
240-564 1 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-04-27   
240-564 3 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-06-03   
240-564 5 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-06-03   
240-572 4 Leonardtown MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2018-08-11   
240-572 5 Leonardtown MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-01-05   
240-583 9 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2011-07-22   
240-584 4 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2018-08-11   
240-584 5 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2018-08-11   
240-584 6 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2018-08-11   
240-584 7 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2018-12-09   
240-597 6 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-07-13   
240-597 8 Gaithersburg MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2022-06-14   
240-607 4 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-12-06   
240-628 9 Mechanicsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2018-08-27   
240-636 0 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2017-07-06   
240-636 1 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-636 2 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-636 3 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-636 4 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-08-22   
240-638 7 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-11-11   
240-638 8 Washington Zone 3 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-11-11   
240-639 3 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-10-22   
240-639 4 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-10-22   
240-639 5 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-09-25   
240-639 6 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-09-25   
240-639 9 Laurel MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-09-08   
240-640 A Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-640 0 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-05-22   
240-640 1 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-02-19   
240-640 2 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-03-07   
240-640 3 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-03-19   
240-640 4 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-05-09   
240-640 5 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-06-03   
240-640 6 Waldorf MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-07-11   

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

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