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: SLBRMDSCXMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-699 A Chestertown MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2024-02-09   
410-725 A Easton MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2024-02-09   
410-831 A Salisbury MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
410-845 A Salisbury MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-210 A Salisbury MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-225 A Cambridge MD 5562 METROPCS, INC. 242      
443-282 A Chestertown MD 5562 METROPCS, INC. 242      
443-362 A Easton MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-365 A Salisbury MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
443-366 A Salisbury MD 5562 METROPCS, INC. 242      
443-373 A Ocean City MD 5562 METROPCS, INC. 242      
443-496 A Easton MD 5562 METROPCS, INC. 242      
443-497 A Salisbury MD 5562 METROPCS, INC. 242      
443-859 A Salisbury MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
667-319 A Chestertown MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      
667-358 A Easton MD 6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242      

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

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