Local Calling Guide

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

NXX: 824

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-824 A Salem NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-824 1 Salem NH   073H TELNYX LLC 122   2022-12-15   
603-824 2 Salem NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2017-12-07   
603-824 3 Salem NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2014-10-31   
603-824 4 Salem NH   5562 METROPCS, INC. 122   2017-02-23   
603-824 5 Salem NH   624H ONVOY SPECTRUM, LLC 122   2022-01-07   
603-824 6 Salem NH   318J COMCAST IP PHONE, LLC 122   2013-06-01   
603-824 8 Salem NH   637E ONVOY, LLC - NH 122   2023-04-10   
603-824 9 Salem NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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