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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OCN: 4536 XO MASSACHUSETTS, INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
617-340 4 Newton MA CMBRMAMQDS0  128   2006-10-13   
617-344 A Jamaica Plain MA BSTPMALLDS1  128      
617-344 0 Jamaica Plain MA BSTPMALLDS1  128      
617-344 1 Jamaica Plain MA BSTPMALLDS1  128      
617-344 2 Jamaica Plain MA BSTPMALLDS1  128      
617-344 4 Jamaica Plain MA BSTPMALLDS1  128      
617-344 5 Jamaica Plain MA BSTPMALLDS1  128      
617-344 6 Jamaica Plain MA BSTPMALLDS1  128      
617-344 7 Jamaica Plain MA BSTPMALLDS1  128      
617-344 8 Jamaica Plain MA BSTPMALLDS1  128      
617-370 A Chelsea MA CMBRMAMQDS0  128      
617-370 0 Chelsea MA CMBRMAMQDS0  128      
617-370 1 Chelsea MA CMBRMAMQDS0  128      
617-370 6 Chelsea MA CMBRMAMQDS0  128      
617-391 3 Boston MA BSTPMALLDS1  128   2008-08-17   
617-399 A Boston MA CMBRMAMQDS0  128      
617-402 7 Watertown MA CMBRMAMQDS0  128   2007-04-20   
617-419 1 Boston MA BSTPMALLDS1  128   2010-01-09   
617-419 2 Boston MA BSTPMALLDS1  128   2010-01-09   
617-419 3 Boston MA BSTPMALLDS1  128   2010-01-09   
617-433 1 Milton MA BSTPMALLDS1  128   2006-09-30   
617-446 A Dorchester MA CMBRMAMQDS0  128      
617-446 0 Dorchester MA CMBRMAMQDS0  128      
617-446 1 Dorchester MA CMBRMAMQDS0  128      
617-446 2 Dorchester MA CMBRMAMQDS0  128      
617-446 6 Dorchester MA CMBRMAMQDS0  128      
617-446 7 Dorchester MA CMBRMAMQDS0  128      
617-446 8 Dorchester MA CMBRMAMQDS0  128      
617-446 9 Dorchester MA CMBRMAMQDS0  128      
617-453 1 Cambridge MA CMBRMAMQDS0  128   2002-11-03   
617-453 5 Cambridge MA CMBRMAMQDS0  128   2003-06-18   
617-453 6 Cambridge MA CMBRMAMQDS0  128   2008-02-21   
617-453 7 Cambridge MA BSTPMALLDS1  128   2008-02-21   
617-477 A Jamaica Plain MA CMBRMAMQDS0  128      
617-477 0 Jamaica Plain MA CMBRMAMQDS0  128      
617-477 5 Jamaica Plain MA CMBRMAMQDS0  128      
617-477 6 Jamaica Plain MA CMBRMAMQDS0  128      
617-500 9 Cambridge MA BSTPMALLDS1  128   2008-09-26   
617-507 A Boston MA BSTPMALLDS1  128      
617-507 0 Boston MA BSTPMALLDS1  128      
617-507 1 Boston MA BSTPMALLDS1  128      
617-507 2 Boston MA BSTPMALLDS1  128      
617-507 3 Boston MA BSTPMALLDS1  128      
617-507 4 Boston MA BSTPMALLDS1  128      
617-507 5 Boston MA BSTPMALLDS1  128      
617-507 6 Boston MA BSTPMALLDS1  128      
617-507 7 Boston MA BSTPMALLDS1  128      
617-507 8 Boston MA BSTPMALLDS1  128      
617-516 A Roxbury MA CMBRMAMQDS0  128      
617-516 0 Roxbury MA CMBRMAMQDS0  128      

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Last updated: Sun, 07 Feb 2021 01:52:50 UTC

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