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: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-233 A Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 0 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 1 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 2 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 3 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 4 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 5 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 6 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 7 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-233 8 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-233 9 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.