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: 938

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-938 A Bradford NH BRFRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-938 0 Bradford NH BRFRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-938 1 Bradford NH   145J TERRA NOVA TELECOM INC. 122   2025-07-11   
603-938 2 Bradford NH BRFRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-938 5 Bradford NH BRFRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-938 6 Bradford NH BRFRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.