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: SPFDMAMADS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
413-225 A Northfield MA 7135 TC SYSTEMS, INC. 126      
413-240 A Chicopee MA 7135 TC SYSTEMS, INC. 126      
413-275 A Holyoke MA 7135 TC SYSTEMS, INC. 126      
413-325 A Greenfield MA 7135 TC SYSTEMS, INC. 126      
413-429 A Great Barrington MA 7135 TC SYSTEMS, INC. 126      
413-449 A Pittsfield MA 7135 TC SYSTEMS, INC. 126      
413-504 A Springfield MA 7135 TC SYSTEMS, INC. 126      
413-559 A Amherst (Franklin County) MA 7135 TC SYSTEMS, INC. 126      
413-579 A Westfield MA 7135 TC SYSTEMS, INC. 126      
413-588 A Northampton MA 7135 TC SYSTEMS, INC. 126      
413-631 A Ludlow MA 7135 TC SYSTEMS, INC. 126      
413-672 A North Adams MA 7135 TC SYSTEMS, INC. 126      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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