Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 7135 TC SYSTEMS, INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
617-409 4 Chelsea MA CMBRMA01DS5  128   2002-05-18   
617-431 A Newton MA CMBRMA01DS5  128      
617-431 9 Newton MA CMBRMA01DS5  128      
617-433 A Milton MA CMBRMA01DS5  128      
617-433 3 Milton MA CMBRMA01DS5  128      
617-454 A Newton MA CMBRMA01DS5  128      
617-454 0 Newton MA CMBRMA01DS5  128      
617-454 1 Newton MA CMBRMA01DS5  128      
617-454 2 Newton MA CMBRMA01DS5  128      
617-454 3 Newton MA CMBRMA01DS5  128      
617-454 6 Newton MA CMBRMA01DS5  128      
617-454 9 Newton MA CMBRMA01DS5  128      
617-476 A Boston MA BSTNMACODS0  128      
617-487 A Brookline MA BSTNMACODS0  128      
617-487 0 Brookline MA BSTNMACODS0  128      
617-487 6 Brookline MA BSTNMACODS0  128      
617-488 A Boston MA BSTNMACODS0  128      
617-488 0 Boston MA BSTNMACODS0  128      
617-488 1 Boston MA BSTNMACODS0  128      
617-488 2 Boston MA BSTNMACODS0  128      
617-488 3 Boston MA BSTNMACODS0  128      
617-488 4 Boston MA BSTNMACODS0  128      
617-488 5 Boston MA BSTNMACODS0  128      
617-488 6 Boston MA BSTNMACODS0  128      
617-488 7 Boston MA BSTNMACODS0  128      
617-488 8 Boston MA BSTNMACODS0  128      
617-514 5 Dorchester MA BRTNMACOVMD  128   2010-04-30   
617-514 8 Dorchester MA BRTNMACOVMD  128   2011-09-22   
617-528 A Cambridge MA CMBRMA01DS5  128      
617-528 1 Cambridge MA CMBRMA01DS5  128      
617-528 2 Cambridge MA CMBRMA01DS5  128      
617-528 3 Cambridge MA CMBRMA01DS5  128      
617-528 4 Cambridge MA CMBRMA01DS5  128      
617-528 5 Cambridge MA CMBRMA01DS5  128      
617-528 6 Cambridge MA CMBRMA01DS5  128      
617-528 7 Cambridge MA CMBRMA01DS5  128      
617-530 A Boston MA CMBRMA01DS5  128      
617-530 2 Boston MA CMBRMA01DS5  128      
617-530 4 Boston MA CMBRMA01DS5  128      
617-530 5 Boston MA CMBRMA01DS5  128      
617-530 6 Boston MA CMBRMA01DS5  128      
617-530 7 Boston MA CMBRMA01DS5  128      
617-530 8 Boston MA CMBRMA01DS5  128      
617-530 9 Boston MA CMBRMA01DS5  128      
617-544 4 Everett MA CMBRMA01DS5  128   2002-05-18   
617-563 A Boston MA BSTNMACODS0  128      
617-580 4 Charlestown MA BRTNMACOVMD  128   2002-05-14   
617-597 8 Newton MA BRTNMACOVMD  128   2023-12-14   
617-598 A Boston MA BSTNMACODS0  128      
617-602 4 Roxbury MA BRTNMACOVMD  128   2002-05-14   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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