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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-421 A Washington Zone 10 MD BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-421 0 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-421 1 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-421 2 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-421 3 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-08-01   
240-421 4 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-09-15   
240-421 5 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-10-09   
240-421 6 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-421 7 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-12-17   
240-421 8 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-07-17   
240-421 9 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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