Local Calling Guide

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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-420 A Merrimack NH MNCHNHACDS0  7778 BROOKS FIBER COMMUNICATIONS OF NEW HAMPSHIRE - NH 122      
603-420 1 Merrimack NH   2698 CTC COMMUNICATIONS CORP. - NH 122   2001-09-24   
603-420 2 Merrimack NH   7421 AT&T LOCAL 122   2003-12-16   
603-420 4 Merrimack NH   9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-420 5 Merrimack NH   4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122   2006-05-01   
603-420 8 Merrimack NH   4112 COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH 122   2009-03-22   
603-420 9 Merrimack NH   7778 BROOKS FIBER COMMUNICATIONS OF NEW HAMPSHIRE - NH 122      

Last updated: Sun, 31 May 2020 11:59:01 UTC

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