Local Calling Guide

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

NXX: 253

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-253 A Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-253 0 Center Harbor NH   829J PAETEC ITEL, LLC 122   2002-09-10   
603-253 1 Center Harbor NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2006-10-30   
603-253 2 Center Harbor NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-253 3 Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-253 4 Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-253 5 Center Harbor NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-253 6 Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-253 7 Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-253 8 Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-253 9 Center Harbor NH CNHRNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

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

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