Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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
603-377 A Merrimack NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 122      
603-377 0 Merrimack NH   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 122      
603-377 1 Merrimack NH   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 122   2016-11-19   
603-377 6 Merrimack NH   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 122      
603-377 7 Merrimack NH   4112 COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH 122   2012-04-30   

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

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