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: FRMNMAUNX0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-488 A Milford MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
508-656 A Framingham MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
508-683 A Marlboro MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
508-970 A Marlboro MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
774-203 A Attleboro MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
774-204 A Framingham MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
978-212 A Hudson MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
978-391 A Ayer MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
978-785 A Lunenburg MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
978-822 A Shirley MA 3370 CTC COMMUNICATIONS CORP. - MA 128   2005-07-31   
978-831 A Concord MA 3370 CTC COMMUNICATIONS CORP. - MA 128      
978-893 A Acton MA 3370 CTC COMMUNICATIONS CORP. - MA 128      

Last updated: Sat, 27 Jul 2019 10:59:49 UTC

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