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
301-396 2 Waldorf MD 318J COMCAST IP PHONE, LLC 236   2019-03-20   
301-407 1 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2011-06-10   
301-417 4 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2015-04-14   
301-417 8 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2015-10-15   
301-433 8 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2015-08-17   
301-448 A Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236      
301-448 1 Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236      
301-456 A Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
301-456 1 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
301-456 2 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
301-456 7 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2013-06-05   
301-456 8 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
301-477 A Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236      
301-477 1 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236      
301-477 2 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236      
301-477 3 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236      
301-477 4 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236   2017-02-01   
301-477 7 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236   2015-09-04   
301-484 A Washington Zone 4 MD 318J COMCAST IP PHONE, LLC 236      
301-485 A Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236      
301-485 0 Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236   2012-10-07   
301-485 1 Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236      
301-485 8 Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236   2008-04-24   
301-539 3 La Plata MD 318J COMCAST IP PHONE, LLC 236   2013-09-05   
301-541 0 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2012-08-20   
301-545 2 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2017-08-17   
301-557 9 Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236   2013-09-08   
301-569 4 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2013-12-10   
301-569 6 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2011-09-08   
301-569 7 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2012-01-14   
301-574 7 Washington Zone 15 MD 318J COMCAST IP PHONE, LLC 236   2018-11-29   
301-603 2 Washington Zone 11 MD 318J COMCAST IP PHONE, LLC 236   2016-07-13   
301-605 7 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2007-05-02   
301-636 3 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2013-08-27   
301-636 4 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2010-01-09   
301-637 9 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2010-10-11   
301-684 2 Indian Head MD 318J COMCAST IP PHONE, LLC 236   2007-09-20   
301-747 4 Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236   2015-10-02   
301-753 7 Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236   2017-04-14   
301-755 5 Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236   2008-07-19   
301-755 6 Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236   2008-07-19   
301-822 4 Washington Zone 11 MD 318J COMCAST IP PHONE, LLC 236   2013-10-03   
301-844 5 Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236   2014-07-21   
301-847 9 Washington Zone 12 MD 318J COMCAST IP PHONE, LLC 236   2014-10-03   
301-851 5 Washington Zone 4 MD 318J COMCAST IP PHONE, LLC 236   2014-12-12   
301-902 7 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236   2019-07-05   
301-909 0 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2013-06-18   
301-909 1 Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236   2015-11-18   
301-978 7 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2014-09-18   
410-824 8 Waterloo (Washington DC LATA) MD 318J COMCAST IP PHONE, LLC 236   2012-01-10   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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