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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-215 A Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-284 A Frostburg MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-329 A Hagerstown MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-356 A Myersville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-436 A Buckeystown MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-575 A Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-692 A Grantsville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-891 A Damascus (Hagerstown LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-920 A Cumberland MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-979 A Cumberland MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
240-996 A Brunswick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-363 A Damascus (Hagerstown LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-703 A Mount Airy MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-859 A Oakland MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-876 A Cumberland MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
304-867 A Berkeley Springs WV 9944 LEVEL 3 COMMUNICATIONS, LLC - WV 240      
304-885 A Charles Town WV 9944 LEVEL 3 COMMUNICATIONS, LLC - WV 240      
304-944 A Berkeley Springs WV 9944 LEVEL 3 COMMUNICATIONS, LLC - WV 240      
814-747 A State Line PA 4007 LEVEL 3 COMMUNICATIONS, LLC - PA 240      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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