Local Calling Guide

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

NXX: 413

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-413 A Manchester NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-413 0 Manchester NH   996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-413 1 Manchester NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-04-04   
603-413 2 Manchester NH   637E ONVOY, LLC - NH 122      
603-413 3 Manchester NH   996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-413 4 Manchester NH   996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-413 5 Manchester NH   829J PAETEC ITEL, LLC 122   2005-07-09   
603-413 6 Manchester NH   829J PAETEC ITEL, LLC 122   2005-07-09   
603-413 7 Manchester NH   829J PAETEC ITEL, LLC 122   2014-10-15   
603-413 8 Manchester NH   637E ONVOY, LLC - NH 122      
603-413 9 Manchester NH   624H ONVOY SPECTRUM, LLC 122   2022-01-07   

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

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