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: CMLDMDCMEMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-202 A Highfield MD 876D ONVOY, LLC - MD 240      
240-226 A Oakland MD 876D ONVOY, LLC - MD 240      
240-301 A Clear Spring MD 876D ONVOY, LLC - MD 240      
240-451 A Thurmont MD 876D ONVOY, LLC - MD 240      
240-655 A Kitzmiller MD 876D ONVOY, LLC - MD 240      
240-831 A Frederick MD 876D ONVOY, LLC - MD 240      
240-851 A McCoole MD 876D ONVOY, LLC - MD 240      
240-862 A Mount Savage MD 876D ONVOY, LLC - MD 240      
240-870 A Middletown MD 876D ONVOY, LLC - MD 240      
240-873 A Buckeystown MD 876D ONVOY, LLC - MD 240      
240-874 A Thurmont MD 876D ONVOY, LLC - MD 240      
240-875 A Mount Airy MD 876D ONVOY, LLC - MD 240      
240-877 A Frederick MD 876D ONVOY, LLC - MD 240      
240-908 A Walkersville MD 876D ONVOY, LLC - MD 240      
240-913 A Damascus (Hagerstown LATA) MD 876D ONVOY, LLC - MD 240      
240-995 A Flintstone MD 876D ONVOY, LLC - MD 240      
681-240 A Shepherdstown WV 449F ONVOY, LLC - WV 240      
681-246 A Inwood WV 449F ONVOY, LLC - WV 240      
681-248 A Martinsburg WV 449F ONVOY, LLC - WV 240      
681-290 A Elk Garden WV 449F ONVOY, LLC - WV 240      
681-293 A Ridgeley WV 449F ONVOY, LLC - WV 240      
681-677 A Charles Town WV 449F ONVOY, LLC - WV 240      
681-900 A Hedgesville WV 449F ONVOY, LLC - WV 240      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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