Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-558 A Washington Zone 11 MD HRNDVA13DS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-558 0 Washington Zone 11 MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
240-558 1 Washington Zone 11 MD   087F CBEYOND COMMUNICATIONS, LLC - MD 236   2008-10-05   
240-558 2 Washington Zone 11 MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-558 3 Washington Zone 11 MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2008-04-30   
240-558 4 Washington Zone 11 MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2008-04-30   
240-558 5 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2012-10-07   
240-558 6 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2015-07-30   
240-558 7 Washington Zone 11 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-558 8 Washington Zone 11 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-19   
240-558 9 Washington Zone 11 MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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