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
240-221 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
240-221 0 Washington Zone 11 MD   9212 VERIZON MARYLAND, INC. 236      
240-221 1 Washington Zone 11 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-17   
240-221 2 Washington Zone 11 MD   9212 VERIZON MARYLAND, INC. 236      
240-221 3 Washington Zone 11 MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2005-07-25   
240-221 4 Washington Zone 11 MD   9212 VERIZON MARYLAND, INC. 236      
240-221 5 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2016-10-01   
240-221 6 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2016-10-01   
240-221 7 Washington Zone 11 MD   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2019-12-28   
240-221 8 Washington Zone 11 MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 236   2004-04-06   
240-221 9 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2018-10-24   

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

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