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: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-439 A Keene NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-439 0 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-439 1 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-439 2 Keene NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-439 3 Keene NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-439 4 Keene NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-439 6 Keene NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-439 7 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-439 8 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-439 9 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.