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: OXFRMAAK1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
508-731 A Oxford MA 792K CHARTER IP ENABLED SERVICES, LLC 128      
508-779 A Uxbridge MA 792K CHARTER IP ENABLED SERVICES, LLC 128      
774-234 A Rutland MA 792K CHARTER IP ENABLED SERVICES, LLC 128      
774-241 A Sturbridge MA 792K CHARTER IP ENABLED SERVICES, LLC 128      
774-243 A Worcester MA 792K CHARTER IP ENABLED SERVICES, LLC 128      
978-650 A Pepperell MA 792K CHARTER IP ENABLED SERVICES, LLC 128      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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