Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 BTVLMD127MD  5562 METROPCS, INC. 236   2017-10-01   
240-260 8 Washington Zone 14 MD BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2018-10-22   
240-260 9 Washington Zone 14 MD BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2023-06-30   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.