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: 269

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-269 A Center Barnstead NH CNBNNHXARP0  0049 UNION TEL. CO. 122      
603-269 0 Center Barnstead NH CNBNNHXARP0  0049 UNION TEL. CO. 122      
603-269 3 Center Barnstead NH   145J TERRA NOVA TELECOM INC. 122   2025-07-11   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.