Local Calling Guide

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

NXX: 583

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-583 A Exeter NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-583 0 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2010-05-03   
603-583 1 Exeter NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2010-07-06   
603-583 2 Exeter NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2011-02-10   
603-583 3 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2009-06-01   
603-583 4 Exeter NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-583 5 Exeter NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2009-09-09   
603-583 6 Exeter NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2011-03-25   
603-583 7 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2011-12-04   
603-583 8 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2013-06-30   
603-583 9 Exeter NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2011-12-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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