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: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-556 A Washington Zone 14 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-556 0 Washington Zone 14 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-556 1 Washington Zone 14 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      
240-556 2 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   
240-556 3 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2015-07-03   
240-556 4 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2015-09-20   
240-556 5 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
240-556 6 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-06-27   
240-556 7 Washington Zone 14 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
240-556 8 Washington Zone 14 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2015-08-14   
240-556 9 Washington Zone 14 MD CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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