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: 567

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-567 A Peterborough NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-567 0 Peterborough NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-04   
603-567 4 Peterborough NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-567 5 Peterborough NH   829J PAETEC ITEL, LLC 122   2015-02-18   
603-567 7 Peterborough NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-04-28   
603-567 8 Peterborough NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2025-03-14   

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

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