Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 4773 XO MARYLAND, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-489 4 Poolesville MD   236   2005-08-15   
240-489 5 Poolesville MD   236   2005-08-15   
240-489 6 Poolesville MD   236   2005-08-15   
240-489 7 Poolesville MD   236   2005-08-15   
240-489 8 Poolesville MD   236   2005-08-15   
240-489 9 Poolesville MD   236      
240-510 A Washington Zone 15 MD WASHDCCZDS0  236      
240-510 0 Washington Zone 15 MD   236      
240-510 1 Washington Zone 15 MD   236   2007-03-26   
240-510 2 Washington Zone 15 MD   236   2007-03-26   
240-510 9 Washington Zone 15 MD   236      
240-516 7 Washington Zone 12 MD   236   2007-04-05   
240-523 A La Plata MD WASHDCCZDS0  236      
240-523 0 La Plata MD   236      
240-523 5 La Plata MD   236   2005-08-15   
240-523 6 La Plata MD   236   2005-08-15   
240-523 7 La Plata MD   236   2005-08-15   
240-523 8 La Plata MD   236   2005-08-15   
240-523 9 La Plata MD   236      
240-538 A Leonardtown MD WASHDCCZDS0  236      
240-538 0 Leonardtown MD   236      
240-538 9 Leonardtown MD   236      
240-547 6 Laurel MD   236   2006-10-27   
240-560 A Washington Zone 12 MD WASHDCCZDS0  236      
240-560 0 Washington Zone 12 MD   236      
240-560 9 Washington Zone 12 MD   236      
240-582 3 Washington Zone 4 MD   236   2010-04-29   
240-582 8 Washington Zone 4 MD   236   2007-03-26   
240-582 9 Washington Zone 4 MD   236   2007-03-26   
240-583 8 Laurel MD   236   2010-09-02   
240-595 6 Washington Zone 3 MD   236   2007-02-19   
240-607 6 Waldorf MD   236   2005-05-23   
240-607 7 Waldorf MD   236   2005-05-23   
240-607 8 Waldorf MD   236   2005-05-23   
240-619 7 Washington Zone 5 MD   236   2007-07-29   
240-621 3 Washington Zone 11 MD   236   2011-10-23   
240-644 A Washington Zone 2 MD WASHDCCZDS0  236      
240-644 0 Washington Zone 2 MD   236      
240-644 1 Washington Zone 2 MD   236      
240-644 6 Washington Zone 2 MD   236      
240-645 A Washington Zone 3 MD WASHDCCZDS0  236      
240-645 0 Washington Zone 3 MD   236      
240-645 1 Washington Zone 3 MD   236      
240-645 4 Washington Zone 3 MD   236      
240-652 A Mechanicsville MD WASHDCCZDS0  236      
240-652 1 Mechanicsville MD   236      
240-652 4 Mechanicsville MD   236   2005-08-15   
240-652 5 Mechanicsville MD   236   2005-08-15   
240-652 6 Mechanicsville MD   236      
240-652 8 Mechanicsville MD   236   2005-08-15   

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Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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