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
240-846 A Washington Zone 16 MD WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-846 0 Washington Zone 16 MD   4773 XO MARYLAND, LLC 236      
240-846 1 Washington Zone 16 MD   4773 XO MARYLAND, LLC 236      
240-846 2 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-05-01   
240-846 3 Washington Zone 16 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-12   
240-846 4 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-06-16   
240-846 5 Washington Zone 16 MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2018-10-05   
240-846 6 Washington Zone 16 MD   4773 XO MARYLAND, LLC 236      
240-846 7 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-23   
240-846 8 Washington Zone 16 MD   082H LOCAL ACCESS LLC - MD 236   2016-05-31   
240-846 9 Washington Zone 16 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-05-01   

Last updated: Fri, 17 May 2019 00:49:52 UTC

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