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: 774 [Rate centres in NPA 774] [Dial plan for NPA 774]

NXX: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-258 A Northboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
774-258 0 Northboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
774-258 1 Northboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
774-258 2 Northboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
774-258 3 Northboro MA CMBRMABEQMD  321J HD CARRIER LLC 128      
774-258 4 Northboro MA CMBRMABEQMD  321J HD CARRIER LLC 128      
774-258 5 Northboro MA CMBRMABEZMD  756G WIDE VOICE, LLC - MA 128      
774-258 6 Northboro MA CMBRMABEQMD  321J HD CARRIER LLC 128      
774-258 7 Northboro MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128      
774-258 8 Northboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.