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: 971

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-971 A Frederick MD FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240      
240-971 0 Frederick MD HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
240-971 1 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2018-10-14   
240-971 2 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2018-11-07   
240-971 3 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2018-11-07   
240-971 4 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2018-11-07   
240-971 5 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2018-11-07   
240-971 6 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2018-04-09   
240-971 7 Frederick MD FRDRMDFRXKX  508J CENTURYLINK COMMUNICATIONS, LLC 240   2016-10-01   
240-971 8 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2018-02-05   
240-971 9 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2018-02-05   

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

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