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.

OCN: 4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-310 A Hagerstown MD CMLDMDCM5MD  240      
240-310 0 Hagerstown MD CMLDMDCM5MD  240      
240-310 7 Hagerstown MD CMLDMDCM5MD  240      
240-321 A Oakland MD CMLDMDCM5MD  240      
240-321 0 Oakland MD CMLDMDCM5MD  240      
240-321 1 Oakland MD CMLDMDCM5MD  240      
240-321 2 Oakland MD CMLDMDCM5MD  240      
240-321 3 Oakland MD CMLDMDCM5MD  240      
240-321 4 Oakland MD CMLDMDCM5MD  240      
240-321 5 Oakland MD CMLDMDCM5MD  240      
240-321 6 Oakland MD CMLDMDCM5MD  240      
240-321 7 Oakland MD CMLDMDCM5MD  240      
240-362 1 Cumberland MD CMLDMDCM5MD  240   2005-01-31   
240-362 2 Cumberland MD CMLDMDCM5MD  240   2005-01-31   
240-362 3 Cumberland MD CMLDMDCM5MD  240   2005-01-31   
240-362 4 Cumberland MD CMLDMDCM5MD  240   2005-01-31   
240-362 5 Cumberland MD CMLDMDCM5MD  240   2005-01-31   
240-362 6 Cumberland MD CMLDMDCM5MD  240   2006-07-03   
240-362 8 Cumberland MD CMLDMDCM5MD  240   2007-03-13   
240-522 2 Cumberland MD CMLDMDCM5MD  240   2007-09-19   
240-785 7 Oakland MD CMLDMDCM5MD  240   2022-01-31   
240-785 8 Oakland MD CMLDMDCM5MD  240   2022-01-31   
240-807 A Cumberland MD CMLDMDCM5MD  240      
240-807 0 Cumberland MD CMLDMDCM5MD  240   2021-10-23   
240-860 7 Cumberland MD CMLDMDCM5MD  240   2019-01-29   
301-268 A Cumberland MD CMLDMDCM5MD  240      
301-491 A Hagerstown MD CMLDMDCM5MD  240      
301-616 A Oakland MD CMLDMDCM5MD  240      
301-707 A Cumberland MD CMLDMDCM5MD  240      
301-723 0 Cumberland MD CMLDMDCM5MD  240   2005-07-22   
301-784 6 Cumberland MD CMLDMDCM5MD  240      
301-876 0 Cumberland MD CMLDMDCM5MD  240   2003-03-05   
301-876 1 Cumberland MD CMLDMDCM5MD  240   2003-03-05   
301-876 2 Cumberland MD CMLDMDCM5MD  240   2003-03-05   
301-876 3 Cumberland MD CMLDMDCM5MD  240   2003-03-05   
301-876 5 Cumberland MD CMLDMDCM5MD  240   2004-08-23   
301-876 7 Cumberland MD CMLDMDCM5MD  240   2004-09-06   
301-876 8 Cumberland MD CMLDMDCM5MD  240   2004-08-23   
301-988 A Hagerstown MD CMLDMDCM5MD  240      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.