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: BSTPMALLDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-955 A Chilmark MA 4536 XO MASSACHUSETTS, INC. 128   2006-05-28   
774-298 A Oakham MA 4536 XO MASSACHUSETTS, INC. 128   2006-06-12   
774-300 A Foxboro MA 4536 XO MASSACHUSETTS, INC. 128   2010-12-26   
774-377 A Mattapoisett MA 4536 XO MASSACHUSETTS, INC. 128   2006-03-27   
774-582 A Mattapoisett MA 4536 XO MASSACHUSETTS, INC. 128      
774-855 A Assonet MA 4536 XO MASSACHUSETTS, INC. 128   2006-03-26   
774-925 A Framingham MA 4536 XO MASSACHUSETTS, INC. 128      
781-948 A Norwood MA 4536 XO MASSACHUSETTS, INC. 128      
857-288 A Boston MA 4536 XO MASSACHUSETTS, INC. 128      
978-704 A Manchester MA 4536 XO MASSACHUSETTS, INC. 128      
978-883 A Ashburnham MA 4536 XO MASSACHUSETTS, INC. 128   2006-06-12   
978-913 A Ashby MA 4536 XO MASSACHUSETTS, INC. 128   2006-05-28   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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