Local Calling Guide

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

NXX: 509

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-509 A Rochester NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-509 0 Rochester NH   5562 METROPCS, INC. 122   2006-03-18   
603-509 1 Rochester NH   829J PAETEC ITEL, LLC 122   2001-11-29   
603-509 2 Rochester NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-05-02   
603-509 3 Rochester NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-05-02   
603-509 4 Rochester NH   9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-509 6 Rochester NH   5562 METROPCS, INC. 122   2014-12-15   
603-509 7 Rochester NH   145J TERRA NOVA TELECOM INC. 122   2023-12-06   
603-509 8 Rochester NH   6386 BELL ATLANTIC MOBILE, INC 122   2015-09-01   
603-509 9 Rochester NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2010-10-02   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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