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: 379

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-379 A Rye Beach NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-379 0 Rye Beach NH MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122      
603-379 1 Rye Beach NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-379 2 Rye Beach NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-379 3 Rye Beach NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-379 5 Rye Beach NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-379 6 Rye Beach NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-379 7 Rye Beach NH DOVRNHTH8MD  2698 CTC COMMUNICATIONS CORP. - NH 122      
603-379 8 Rye Beach NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-379 9 Rye Beach NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.