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.

Washington Zone 2, MD

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-480 3 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-11-25   
240-480 4 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-11-25   
240-480 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-11-25   
240-480 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-11-25   
240-480 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-11-25   
240-480 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-11-25   
240-480 9 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-25   
240-482 A   829J PAETEC ITEL, LLC 236   2025-04-02   
240-482 0   829J PAETEC ITEL, LLC 236      
240-482 1   829J PAETEC ITEL, LLC 236      
240-482 2   829J PAETEC ITEL, LLC 236      
240-482 3   829J PAETEC ITEL, LLC 236      
240-482 4   829J PAETEC ITEL, LLC 236      
240-482 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-12-27   
240-482 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-07-11   
240-482 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2005-07-11   
240-482 8 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-13   
240-482 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-09-07   
240-483 A ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-483 0 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-483 1 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-03-26   
240-483 2 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-02-15   
240-483 3 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-02-15   
240-483 4 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2003-01-12   
240-483 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-02-04   
240-483 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-11-24   
240-483 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-09-28   
240-483 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-09-28   
240-483 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-08-31   
240-497 A CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 0 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 1 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 2 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 3 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 4 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 5 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 6 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 7 CHCHMDBEX4X  551G NUSO, LLC 236   2018-07-23   
240-497 8 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-497 9 CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
240-498 A BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 0 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 1 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 2 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 3 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 4 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-498 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-507 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-507 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-11-14   
240-507 1   829J PAETEC ITEL, LLC 236   2008-12-18   
240-507 2 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2009-02-12   
240-507 3 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-02-05   
240-507 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-02-05   
240-507 5 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-06-26   
240-507 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2009-06-01   
240-507 7 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-12-18   
240-507 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2009-06-01   
240-507 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-05-02   
240-515 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-515 0 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 2 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-01-31   
240-515 3 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-11-29   
240-515 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 7 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 8 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2005-03-24   
240-515 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2006-02-19   
240-519 A BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-519 0 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-519 1 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-519 2 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-01-11   
240-519 3 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-01-11   
240-519 4 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-01-11   
240-519 5 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-01-11   
240-519 6 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-519 7 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-519 8 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-06-12   
240-519 9 SLSPMD913MD  939H COMMIO, LLC 236   2023-12-23   
240-534 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-534 0   515J IP HORIZON LLC 236   2016-06-11   
240-534 1 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-07-09   
240-534 2 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2016-06-11   
240-534 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2016-08-21   
240-534 4 CHCHMDBEX4X  551G NUSO, LLC 236   2016-08-31   
240-534 5 CHCHMDBEX4X  551G NUSO, LLC 236   2016-08-31   
240-534 6 CHCHMDBEX4X  551G NUSO, LLC 236   2016-08-31   
240-534 7 CHCHMDBEX4X  551G NUSO, LLC 236   2016-08-31   
240-534 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2016-07-14   
240-534 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2016-06-10   
240-541 A BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-541 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-04-22   
240-541 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-04-22   
240-541 2 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-541 3 BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-02-10   

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.