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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Switch: BSTNMACODS2

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
857-383 5 Boston MA 7135 TC SYSTEMS, INC. 128   2005-12-10   
857-574 3 East Boston MA 7135 TC SYSTEMS, INC. 128   2009-08-13   
857-971 2 Charlestown MA 7135 TC SYSTEMS, INC. 128   2016-06-20   
978-421 A Lowell MA 7135 TC SYSTEMS, INC. 128      
978-421 0 Lowell MA 7135 TC SYSTEMS, INC. 128      
978-421 1 Lowell MA 7135 TC SYSTEMS, INC. 128      
978-421 2 Lowell MA 7135 TC SYSTEMS, INC. 128      
978-421 8 Lowell MA 7135 TC SYSTEMS, INC. 128      
978-421 9 Lowell MA 7135 TC SYSTEMS, INC. 128      
978-503 A Fitchburg MA 7135 TC SYSTEMS, INC. 128      
978-503 5 Fitchburg MA 7135 TC SYSTEMS, INC. 128      
978-503 6 Fitchburg MA 7135 TC SYSTEMS, INC. 128      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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