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: 371

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-371 A Peterborough NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-371 0 Peterborough NH   829J PAETEC ITEL, LLC 122   2000-05-29   
603-371 1 Peterborough NH   829J PAETEC ITEL, LLC 122   2004-05-09   
603-371 2 Peterborough NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-07-15   
603-371 3 Peterborough NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-07-15   
603-371 4 Peterborough NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-371 5 Peterborough NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2005-01-24   
603-371 6 Peterborough NH   829J PAETEC ITEL, LLC 122      
603-371 7 Peterborough NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-371 8 Peterborough NH   829J PAETEC ITEL, LLC 122   2006-05-03   
603-371 9 Peterborough NH   829J PAETEC ITEL, LLC 122   2000-05-24   

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

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