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: 558

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-558 A Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 0 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 1 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 2 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 3 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 4 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 5 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 6 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-07-27   
603-558 7 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-10-13   
603-558 8 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-558 9 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2014-01-06   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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