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.

Switch: WASHDCDP8MD

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-623 A Washington Zone 4 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-623 0 Washington Zone 4 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-02-05   
240-623 1 Washington Zone 4 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-02-05   
240-624 0 Washington Zone 13 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-01-15   
240-627 6 Washington Zone 11 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-09-28   
240-628 4 Mechanicsville MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-06-07   
240-628 5 Mechanicsville MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-07-18   
240-630 A Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-630 0 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-09   
240-630 1 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-09   
240-630 2 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-09   
240-630 3 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-09   
240-630 4 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-09   
240-630 5 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-09   
240-639 8 Laurel MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2020-08-10   
240-650 0 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 3 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 4 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 5 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 6 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-650 7 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-03-10   
240-668 4 Damascus MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2009-02-09   
240-670 A Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-670 0 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-05-08   
240-670 2 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 3 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 4 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 5 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-09-06   
240-670 6 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-06-11   
240-671 0 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-673 A Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-673 0 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-07-19   
240-673 1 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2019-07-19   
240-673 8 Washington Zone 2 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-08-27   
240-681 9 Brandywine MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
240-685 1 Brandywine MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
240-685 2 Brandywine MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-10-22   
240-685 6 Brandywine MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-06-16   
240-686 5 Gaithersburg MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-08-12   
240-691 1 Washington Zone 5 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2024-10-19   
240-704 6 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-704 7 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-704 8 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-17   
240-704 9 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-24   
240-705 8 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
240-705 9 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
240-706 7 Washington Zone 3 MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-01-21   
240-718 4 Lexington Park-Great Mills MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-03   
240-718 6 Lexington Park-Great Mills MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-718 8 Lexington Park-Great Mills MD 071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-26   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 >>

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.