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.

Randallstown, MD

<< 1 2 3

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-675 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2008-02-04   
443-675 9   7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-985 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
443-985 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
443-985 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
443-985 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2011-08-08   
443-985 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2013-12-27   
443-985 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2014-09-21   
443-985 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2015-03-16   
443-985 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
443-985 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2008-10-12   
443-985 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2013-05-20   
443-985 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
667-324 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2021-07-18   
667-324 0   624H ONVOY SPECTRUM, LLC 238   2022-02-12   
667-324 1   624H ONVOY SPECTRUM, LLC 238   2022-02-12   
667-324 2   876D ONVOY, LLC - MD 238   2021-07-19   
667-324 3   876D ONVOY, LLC - MD 238   2021-07-19   
667-324 4   624H ONVOY SPECTRUM, LLC 238   2021-09-10   
667-324 5   876D ONVOY, LLC - MD 238   2021-09-23   
667-324 6   624H ONVOY SPECTRUM, LLC 238   2021-10-21   
667-324 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2021-07-18   
667-324 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2021-07-18   
667-324 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2021-07-18   
667-390 A   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2022-03-13   
667-390 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2022-06-09   
667-390 6   876D ONVOY, LLC - MD 238   2022-04-25   
667-390 7   876D ONVOY, LLC - MD 238   2022-04-25   
667-390 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2022-03-13   
667-390 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2022-03-13   

<< 1 2 3

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.