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: 746

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-746 A Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 0 Contoocook NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-02-16   
603-746 1 Contoocook NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-01-25   
603-746 2 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 3 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 4 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 5 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 6 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 8 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 9 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.