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: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-512 A Washington Zone 13 (Baltimore LATA) MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
240-512 0 Washington Zone 13 (Baltimore LATA) MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-05-09   
240-512 1 Washington Zone 13 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
240-512 2 Washington Zone 13 (Baltimore LATA) MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2007-12-03   
240-512 3 Washington Zone 13 (Baltimore LATA) MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
240-512 4 Washington Zone 13 (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-07-15   
240-512 5 Washington Zone 13 (Baltimore LATA) MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-23   
240-512 6 Washington Zone 13 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-05-31   
240-512 7 Washington Zone 13 (Baltimore LATA) MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-06-25   
240-512 8 Washington Zone 13 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
240-512 9 Washington Zone 13 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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