Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 580

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-580 A Exeter NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-580 0 Exeter NH   6386 BELL ATLANTIC MOBILE, INC 122   2026-01-08   
603-580 1 Exeter NH   318J COMCAST IP PHONE, LLC 122      
603-580 2 Exeter NH   318J COMCAST IP PHONE, LLC 122      
603-580 3 Exeter NH   6386 BELL ATLANTIC MOBILE, INC 122   2022-08-29   
603-580 4 Exeter NH   318J COMCAST IP PHONE, LLC 122   2012-07-20   
603-580 5 Exeter NH   318J COMCAST IP PHONE, LLC 122      
603-580 6 Exeter NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2003-01-01   
603-580 7 Exeter NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2003-01-01   
603-580 8 Exeter NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2003-01-06   
603-580 9 Exeter NH   829J PAETEC ITEL, LLC 122   2006-03-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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