Local Calling Guide

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

NXX: 350

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-350 A Milton NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-350 0 Milton NH   829J PAETEC ITEL, LLC 122   2001-03-26   
603-350 2 Milton NH   145J TERRA NOVA TELECOM INC. 122   2023-11-16   
603-350 4 Milton NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2002-09-19   
603-350 5 Milton NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2018-09-03   
603-350 7 Milton NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2024-05-24   
603-350 8 Milton NH   145J TERRA NOVA TELECOM INC. 122   2025-02-13   
603-350 9 Milton NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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