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: SLBRMD90BMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-365 A Chesapeake City MD 516J TON80 COMMUNICATIONS, LLC 242      
667-468 A Nanticoke MD 516J TON80 COMMUNICATIONS, LLC 242      
667-483 A Deal Island MD 516J TON80 COMMUNICATIONS, LLC 242      
667-526 A Centreville MD 516J TON80 COMMUNICATIONS, LLC 242      
667-693 A Vienna MD 516J TON80 COMMUNICATIONS, LLC 242      
667-743 A Queenstown MD 516J TON80 COMMUNICATIONS, LLC 242      
667-827 A Berlin MD 516J TON80 COMMUNICATIONS, LLC 242      

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

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