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: 607 [Rate centres in NPA 607] [Dial plan for NPA 607]

NXX: 371

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
607-371 A Norwich NY NRWCNYXAMMD  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 138      
607-371 0 Norwich NY GUFDNYAA3MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 138   2015-07-10   
607-371 1 Norwich NY NRWCNYXAMMD  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 138      
607-371 2 Norwich NY NRWCNYXAMMD  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 138      
607-371 3 Norwich NY BNGHNYHYXHY  6959 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 138   2016-09-01   
607-371 4 Norwich NY GUFDNYAA3MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 138   2016-02-07   
607-371 5 Norwich NY NRWCNYXA8MD  793K TWC IP ENABLED SERVICES, LLC 138   2018-03-25   
607-371 6 Norwich NY NRWCNYXAMMD  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 138      
607-371 7 Norwich NY BNGHNYHYXSX  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 138   2018-09-18   
607-371 8 Norwich NY BNGHNYHYXNX  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 138   2019-06-21   
607-371 9 Norwich NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 138   2025-02-28   

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.