Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-241 4 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236   2014-06-25   
240-242 3 Washington Zone 11 MD 318J COMCAST IP PHONE, LLC 236   2006-07-04   
240-242 4 Washington Zone 11 MD 318J COMCAST IP PHONE, LLC 236   2006-07-04   
240-243 6 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2018-11-21   
240-244 1 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2006-03-03   
240-244 2 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2016-06-07   
240-244 5 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2007-01-19   
240-245 3 Washington Zone 14 MD 318J COMCAST IP PHONE, LLC 236   2007-05-02   
240-245 4 Washington Zone 14 MD 318J COMCAST IP PHONE, LLC 236   2006-10-21   
240-246 7 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-249 3 Mechanicsville MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-253 2 Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236   2006-03-03   
240-254 2 Hughesville MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-260 3 Washington Zone 14 MD 318J COMCAST IP PHONE, LLC 236   2017-11-13   
240-261 4 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2016-04-25   
240-261 6 Gaithersburg MD 318J COMCAST IP PHONE, LLC 236   2016-08-12   
240-262 1 Lexington Park-Great Mills MD 318J COMCAST IP PHONE, LLC 236   2023-09-15   
240-264 6 Laurel MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-266 1 Washington Zone 14 MD 318J COMCAST IP PHONE, LLC 236   2021-10-07   
240-270 7 Waldorf MD 318J COMCAST IP PHONE, LLC 236   2015-03-20   
240-280 A Laurel MD 318J COMCAST IP PHONE, LLC 236      
240-280 1 Laurel MD 318J COMCAST IP PHONE, LLC 236   2006-08-01   
240-280 2 Laurel MD 318J COMCAST IP PHONE, LLC 236   2006-08-01   
240-280 7 Laurel MD 318J COMCAST IP PHONE, LLC 236   2007-10-07   
240-280 8 Laurel MD 318J COMCAST IP PHONE, LLC 236   2002-01-31   
240-293 6 Washington Zone 12 MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-294 4 Laurel MD 318J COMCAST IP PHONE, LLC 236   2008-06-11   
240-294 6 Laurel MD 318J COMCAST IP PHONE, LLC 236   2007-09-20   
240-294 7 Laurel MD 318J COMCAST IP PHONE, LLC 236   2007-09-20   
240-294 8 Laurel MD 318J COMCAST IP PHONE, LLC 236   2015-09-15   
240-295 3 Laurel MD 318J COMCAST IP PHONE, LLC 236   2008-06-11   
240-297 9 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236   2006-03-14   
240-318 2 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2008-02-22   
240-318 3 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2009-11-27   
240-318 5 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2013-09-08   
240-328 6 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-334 2 Washington Zone 14 MD 318J COMCAST IP PHONE, LLC 236   2013-10-25   
240-339 1 Washington Zone 15 MD 318J COMCAST IP PHONE, LLC 236   2006-03-14   
240-342 2 Ashton MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-348 4 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2010-09-10   
240-348 7 Washington Zone 16 MD 318J COMCAST IP PHONE, LLC 236   2013-07-19   
240-349 2 La Plata MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-360 2 Laurel MD 318J COMCAST IP PHONE, LLC 236   2014-10-20   
240-360 4 Laurel MD 318J COMCAST IP PHONE, LLC 236   2014-06-23   
240-360 5 Laurel MD 318J COMCAST IP PHONE, LLC 236   2015-10-13   
240-377 8 Indian Head MD 318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-386 8 Washington Zone 10 MD 318J COMCAST IP PHONE, LLC 236   2009-06-13   
240-389 1 Ashton MD 318J COMCAST IP PHONE, LLC 236   2008-02-29   
240-390 3 Ashton MD 318J COMCAST IP PHONE, LLC 236   2017-08-17   
240-391 6 Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236   2007-10-31   

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

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