Local Calling Guide

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

NXX: 200

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-200 A Newmarket NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-200 0 Newmarket NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2011-09-30   
603-200 1 Newmarket NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-08-05   
603-200 2 Newmarket NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-10-20   
603-200 3 Newmarket NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2013-05-01   
603-200 4 Newmarket NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2016-01-19   
603-200 5 Newmarket NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2023-03-27   
603-200 6 Newmarket NH MNCHNHCOX1Y  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2013-01-14   
603-200 7 Newmarket NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-04-29   
603-200 8 Newmarket NH   073H TELNYX LLC 122   2024-04-08   
603-200 9 Newmarket NH MNCHNHCO22Z  073H TELNYX LLC 122   2023-02-03   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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