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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: FRMNMAWADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-282 4 Milford MA 7421 AT&T - LOCAL 128   2003-11-30   
508-305 A Marlboro MA 7421 AT&T - LOCAL 128      
508-305 0 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 1 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 3 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 4 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 6 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 7 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 8 Marlboro MA 7421 AT&T - LOCAL 128      
508-305 9 Marlboro MA 7421 AT&T - LOCAL 128      
508-309 A Framingham MA 7421 AT&T - LOCAL 128      
508-309 1 Framingham MA 7421 AT&T - LOCAL 128      
508-346 A Franklin MA 7421 AT&T - LOCAL 128      
508-346 0 Franklin MA 7421 AT&T - LOCAL 128      
508-346 1 Franklin MA 7421 AT&T - LOCAL 128      
508-346 2 Franklin MA 7421 AT&T - LOCAL 128      
508-346 4 Franklin MA 7421 AT&T - LOCAL 128      
508-346 5 Franklin MA 7421 AT&T - LOCAL 128      
508-346 6 Franklin MA 7421 AT&T - LOCAL 128      
508-346 7 Franklin MA 7421 AT&T - LOCAL 128      
508-346 8 Franklin MA 7421 AT&T - LOCAL 128      
508-346 9 Franklin MA 7421 AT&T - LOCAL 128      
508-382 4 Marlboro MA 7421 AT&T - LOCAL 128   2007-04-06   
508-407 6 Auburn MA 7421 AT&T - LOCAL 128   2003-09-21   
508-433 A Natick MA 7421 AT&T - LOCAL 128      
508-466 A Northboro MA 7421 AT&T - LOCAL 128      
508-779 3 Uxbridge MA 7421 AT&T - LOCAL 128   2006-03-23   
508-809 2 North Attleboro MA 7421 AT&T - LOCAL 128   2002-10-07   
508-918 A Franklin MA 7421 AT&T - LOCAL 128      
508-918 1 Franklin MA 7421 AT&T - LOCAL 128      
774-324 8 Medway MA 7421 AT&T - LOCAL 128   2001-06-08   
978-449 2 Groton MA 7421 AT&T - LOCAL 128      
978-449 3 Groton MA 7421 AT&T - LOCAL 128      
978-489 A Acton MA 7421 AT&T - LOCAL 128      
978-489 0 Acton MA 7421 AT&T - LOCAL 128      
978-489 1 Acton MA 7421 AT&T - LOCAL 128      
978-723 A Maynard MA 7421 AT&T - LOCAL 128      
978-723 2 Maynard MA 7421 AT&T - LOCAL 128      
978-899 A Littleton MA 7421 AT&T - LOCAL 128      
978-899 2 Littleton MA 7421 AT&T - LOCAL 128   2008-07-06   
978-899 3 Littleton MA 7421 AT&T - LOCAL 128   2008-07-06   
978-899 4 Littleton MA 7421 AT&T - LOCAL 128   2008-07-06   
978-899 5 Littleton MA 7421 AT&T - LOCAL 128   2008-07-06   
978-899 9 Littleton MA 7421 AT&T - LOCAL 128      

Last updated: Tue, 24 Jan 2023 03:01:57 UTC

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