Local Calling Guide

Area code/prefix search

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

NXX: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-587 A Candia NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-587 0 Candia NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2000-07-01   
603-587 1 Candia NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-03-14   
603-587 2 Candia NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2012-12-10   
603-587 3 Candia NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-09-06   
603-587 4 Candia NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-04-23   
603-587 7 Candia NH MNCHNHCO22Z  073H TELNYX LLC 122   2023-10-06   
603-587 8 Candia NH   829J PAETEC ITEL, LLC 122   2002-10-14   
603-587 9 Candia NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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