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: CMBRMAORDSG

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-928 9 Blackstone MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-14   
508-934 A Dover MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2025-04-07   
508-934 7 Dover MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-07   
508-936 A Northboro MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-936 0 Northboro MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-936 4 Northboro MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-938 A Westport MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2025-04-07   
508-938 1 Westport MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-01-28   
508-938 6 Westport MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-04-10   
508-939 3 Edgartown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-07   
508-939 6 Edgartown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-06-16   
508-948 0 Westboro MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-12   
508-960 A Natick MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-960 0 Natick MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-966 7 Bellingham MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-02   
508-969 A Framingham MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-969 4 Framingham MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-08-06   
508-969 5 Framingham MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-975 A Natick MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-975 0 Natick MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
508-980 1 Charlton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-04-22   
617-202 3 Brighton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-10   
617-202 9 Brighton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-12   
617-206 1 Brighton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2011-08-27   
617-206 3 Brighton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-04   
617-206 4 Brighton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-05-16   
617-207 5 Winthrop MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-30   
617-208 4 Brighton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-05-12   
617-209 1 Belmont MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-04-14   
617-209 2 Belmont MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-03-25   
617-209 3 Belmont MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-04   
617-209 4 Belmont MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-01   
617-213 A Newton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-213 6 Newton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-10-27   
617-213 7 Newton MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-04-14   
617-229 5 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-12-08   
617-229 6 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-12-08   
617-229 7 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-12-08   
617-231 A Watertown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-231 0 Watertown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-231 1 Watertown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-231 4 Watertown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-231 6 Watertown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-231 7 Watertown MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2013-09-16   
617-245 A Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-245 0 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-01   
617-245 1 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-245 2 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-245 3 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-245 4 Cambridge MA 4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.