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: 937

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-937 A Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-937 0 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-937 1 Meredith NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-937 2 Meredith NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-937 3 Meredith NH   793K TWC IP ENABLED SERVICES, LLC 122      
603-937 4 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-937 5 Meredith NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-937 6 Meredith NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-937 7 Meredith NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-937 8 Meredith NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.