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: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-440 A Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
240-440 0 Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2009-05-19   
240-440 1 Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2009-05-19   
240-440 2 Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2009-06-09   
240-440 3 Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2010-07-06   
240-440 4 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2010-12-23   
240-440 5 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-10-11   
240-440 6 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-10-11   
240-440 7 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-03-17   
240-440 8 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2011-03-17   
240-440 9 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2011-03-17   

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

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