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.

NPA: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 592

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-592 A Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 0 Framingham MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-12-20   
508-592 1 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 2 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 3 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 4 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 5 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 6 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 7 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 8 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      
508-592 9 Framingham MA FRMNMAUNDS8  9102 VERIZON NEW ENGLAND INC. 128      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.