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: 815

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-815 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-815 0 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2016-01-16   
240-815 1 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2017-08-17   
240-815 2 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240   2016-03-05   
240-815 3 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240   2016-03-05   
240-815 4 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240   2016-03-05   
240-815 5 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2016-05-05   
240-815 6 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2016-08-26   
240-815 7 Frederick MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2017-05-23   
240-815 8 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2016-04-01   
240-815 9 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2017-08-06   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.