Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
507-961 A Winona MN ROCHMNHH3MD  620   2025-02-27   
507-961 0 Winona MN   620   2006-05-22   
507-961 1 Winona MN   620   2012-05-31   
507-992 A Cottonwood MN ROCHMNHH3MD  620   2025-02-27   
507-992 0 Cottonwood MN   620      
508-210 0 Holden MA   128   2005-01-02   
508-266 0 Whitinsville MA   128   2004-06-25   
508-266 7 Whitinsville MA   128   2013-09-15   
508-281 0 Marlboro MA   128   2005-01-01   
508-304 1 Worcester MA   128   2006-03-25   
508-304 6 Worcester MA   128   2014-08-11   
508-304 7 Worcester MA   128   2005-10-31   
508-304 8 Worcester MA   128   2004-06-25   
508-304 9 Worcester MA   128   2006-01-05   
508-329 1 Westboro MA   128   2005-01-02   
508-329 5 Westboro MA   128   2008-04-18   
508-329 6 Westboro MA   128   2013-01-27   
508-372 9 Whitinsville MA   128   2007-01-20   
508-373 2 Worcester MA   128   2008-03-29   
508-407 8 Auburn MA   128   2004-06-25   
508-434 0 Charlton MA   128   2004-06-25   
508-434 1 Charlton MA   128   2011-11-06   
508-459 0 Worcester MA   128   2006-05-12   
508-459 1 Worcester MA   128   2006-09-03   
508-459 2 Worcester MA   128   2006-11-24   
508-459 9 Worcester MA   128   2007-05-21   
508-461 5 Webster MA   128   2013-06-23   
508-461 6 Webster MA   128   2008-07-14   
508-461 7 Webster MA   128   2006-06-08   
508-461 9 Webster MA   128   2004-06-25   
508-466 8 Northboro MA   128   2005-01-01   
508-476 5 East Douglas MA   128   2004-06-25   
508-526 3 Uxbridge MA   128   2017-12-31   
508-581 4 Millbury MA   128   2011-08-22   
508-603 1 Upton MA   128   2005-01-01   
508-637 1 North Brookfield MA   128   2004-06-25   
508-731 A Oxford MA OXFRMAAK1MD  128      
508-731 0 Oxford MA   128   2004-06-25   
508-731 6 Oxford MA   128   2004-06-25   
508-731 7 Oxford MA   128   2012-07-04   
508-762 9 Worcester MA   128   2009-12-13   
508-779 A Uxbridge MA OXFRMAAK1MD  128      
508-779 0 Uxbridge MA   128   2004-07-19   
508-779 7 Uxbridge MA   128   2010-01-30   
508-796 5 Worcester MA   128   2007-10-29   
508-859 8 Leicester MA   128   2012-05-31   
508-882 1 Oakham MA   128   2005-01-02   
508-892 5 Leicester MA   128   2004-06-25   
508-909 6 Southbridge MA   128   2005-01-02   
508-917 8 Millbury MA   128   2004-06-25   

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

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