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: FRMNMAWAEMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-614 A Westboro MA 7421 AT&T - LOCAL 128      
508-614 1 Westboro MA 7421 AT&T - LOCAL 128      
508-614 3 Westboro MA 7421 AT&T - LOCAL 128      
508-688 A Worcester MA 7421 AT&T - LOCAL 128      
508-688 3 Worcester MA 7421 AT&T - LOCAL 128      
508-688 6 Worcester MA 7421 AT&T - LOCAL 128      
508-688 8 Worcester MA 7421 AT&T - LOCAL 128      
774-512 5 Westboro MA 7421 AT&T - LOCAL 128   2010-06-28   
774-512 6 Westboro MA 7421 AT&T - LOCAL 128   2010-06-28   
774-512 7 Westboro MA 7421 AT&T - LOCAL 128   2010-06-28   
978-731 3 Westminster MA 7421 AT&T - LOCAL 128      
978-731 4 Westminster MA 7421 AT&T - LOCAL 128      
978-731 5 Westminster MA 7421 AT&T - LOCAL 128      
978-731 6 Westminster MA 7421 AT&T - LOCAL 128      
978-731 7 Westminster MA 7421 AT&T - LOCAL 128      
978-731 8 Westminster MA 7421 AT&T - LOCAL 128      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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