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: 260

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-260 A Washington Zone 14 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-260 0 Washington Zone 14 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-260 1 Washington Zone 14 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-260 2 Washington Zone 14 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-260 3 Washington Zone 14 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2017-11-13   
240-260 4 Washington Zone 14 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-260 5 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-260 6 Washington Zone 14 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-260 7 Washington Zone 14 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2017-10-01   
240-260 8 Washington Zone 14 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2018-10-22   
240-260 9 Washington Zone 14 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2023-06-30   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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