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: 208

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-208 A Lyme NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-208 0 Lyme NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-01-15   
603-208 1 Lyme NH MNCHNHAC3MD  939H COMMIO, LLC 122   2022-10-09   
603-208 2 Lyme NH   829J PAETEC ITEL, LLC 122   2011-04-11   
603-208 3 Lyme NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-04-09   
603-208 6 Lyme NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-208 7 Lyme NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-208 8 Lyme NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-208 9 Lyme NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      

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

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