Local Calling Guide

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

NXX: 718

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-718 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-718 0 Nashua NH   6386 BELL ATLANTIC MOBILE, INC 122   2009-07-06   
603-718 1 Nashua NH   318J COMCAST IP PHONE, LLC 122   2010-12-09   
603-718 2 Nashua NH   6386 BELL ATLANTIC MOBILE, INC 122   2010-08-01   
603-718 3 Nashua NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2010-09-27   
603-718 4 Nashua NH   6386 BELL ATLANTIC MOBILE, INC 122   2010-11-01   
603-718 5 Nashua NH   6386 BELL ATLANTIC MOBILE, INC 122   2010-12-11   
603-718 6 Nashua NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2011-01-10   
603-718 8 Nashua NH   318J COMCAST IP PHONE, LLC 122   2009-08-31   
603-718 9 Nashua NH   6386 BELL ATLANTIC MOBILE, INC 122   2011-06-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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