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: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-400 A Fitchburg MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
978-400 0 Fitchburg MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
978-400 1 Fitchburg MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2005-03-13   
978-400 2 Fitchburg MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
978-400 3 Fitchburg MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
978-400 4 Fitchburg MA   515J IP HORIZON LLC 128      
978-400 5 Fitchburg MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2005-01-20   
978-400 6 Fitchburg MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2005-04-01   
978-400 7 Fitchburg MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-07-06   
978-400 8 Fitchburg MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2007-09-21   
978-400 9 Fitchburg MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.