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: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX: 761

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-761 A Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 0 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 1 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 2 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 3 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 4 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 5 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 6 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 7 Cambridge MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2013-09-30   
617-761 8 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-761 9 Cambridge MA CMBRMABEDS1  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.