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: ESTNMDBNGT0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-238 A Preston MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-241 A Ridgely MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-242 A Rock Hall MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-243 A Oxford MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-244 A Still Pond MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-245 A Cecilton MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-246 A Centreville MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-247 A Chesapeake City MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-248 A Denton MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-249 A Galena MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-326 A Church Hill MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-364 A Stevensville MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-372 A Cambridge MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-382 A Wingate MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-545 A Warwick MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-727 A Sudlersville MD 2593 CORE COMMUNICATIONS, INC.- MD 242      
667-843 A Deal Island MD 2593 CORE COMMUNICATIONS, INC.- MD 242      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.