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: 741

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-741 A New Boston NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-741 0 New Boston NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-741 3 New Boston NH   145J TERRA NOVA TELECOM INC. 122   2022-10-06   
603-741 4 New Boston NH   145J TERRA NOVA TELECOM INC. 122   2025-02-13   
603-741 5 New Boston NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2022-09-26   
603-741 7 New Boston NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-12-23   
603-741 8 New Boston NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-07-01   
603-741 9 New Boston NH   145J TERRA NOVA TELECOM INC. 122   2023-11-16   

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

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