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.

Severna Park, MD

1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-260 A ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
410-260 0   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
410-260 1   9212 VERIZON MARYLAND, INC. 238      
410-260 2   9212 VERIZON MARYLAND, INC. 238      
410-260 3   9212 VERIZON MARYLAND, INC. 238      
410-260 4   9212 VERIZON MARYLAND, INC. 238      
410-260 5   9212 VERIZON MARYLAND, INC. 238      
410-260 6   9212 VERIZON MARYLAND, INC. 238      
410-260 7   9212 VERIZON MARYLAND, INC. 238      
410-260 8   9212 VERIZON MARYLAND, INC. 238      
410-260 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-10-10   
410-269 A ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
410-269 0   9212 VERIZON MARYLAND, INC. 238      
410-269 1   9212 VERIZON MARYLAND, INC. 238      
410-269 2   9212 VERIZON MARYLAND, INC. 238      
410-269 3   5562 METROPCS, INC. 238   2011-08-19   
410-269 4   9212 VERIZON MARYLAND, INC. 238      
410-269 5   9212 VERIZON MARYLAND, INC. 238      
410-269 6   9212 VERIZON MARYLAND, INC. 238      
410-269 7   9212 VERIZON MARYLAND, INC. 238      
410-269 8   9212 VERIZON MARYLAND, INC. 238      
410-269 9   5562 METROPCS, INC. 238   2011-08-19   
410-315 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-315 0   145J TERRA NOVA TELECOM INC. 238   2024-02-14   
410-315 1   876D ONVOY, LLC - MD 238   2024-04-05   
410-315 2   515J IP HORIZON LLC 238   2019-04-26   
410-315 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-315 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-315 5   9212 VERIZON MARYLAND, INC. 238      
410-315 6   9212 VERIZON MARYLAND, INC. 238      
410-315 7   9212 VERIZON MARYLAND, INC. 238      
410-315 8   9212 VERIZON MARYLAND, INC. 238      
410-315 9   9212 VERIZON MARYLAND, INC. 238      
410-384 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-384 0   9212 VERIZON MARYLAND, INC. 238      
410-384 1   9212 VERIZON MARYLAND, INC. 238      
410-384 2   9212 VERIZON MARYLAND, INC. 238      
410-384 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2002-11-30   
410-384 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-15   
410-384 5   9212 VERIZON MARYLAND, INC. 238      
410-384 6   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-09-09   
410-384 7   9212 VERIZON MARYLAND, INC. 238      
410-384 8   281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-12   
410-384 9   9212 VERIZON MARYLAND, INC. 238      
410-421 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-421 0   876D ONVOY, LLC - MD 238   2024-03-01   
410-421 1   876D ONVOY, LLC - MD 238   2024-03-01   
410-421 2   964H BARR TELL USA, INC. 238   2016-12-17   
410-421 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-421 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-421 5   9212 VERIZON MARYLAND, INC. 238      
410-421 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-421 7   876D ONVOY, LLC - MD 238   2015-08-05   
410-421 8   9212 VERIZON MARYLAND, INC. 238      
410-421 9   9212 VERIZON MARYLAND, INC. 238      
410-431 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-431 0   876D ONVOY, LLC - MD 238   2016-03-28   
410-431 1   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2015-12-06   
410-431 2   876D ONVOY, LLC - MD 238   2016-04-04   
410-431 3   876D ONVOY, LLC - MD 238   2016-04-04   
410-431 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-22   
410-431 5   9212 VERIZON MARYLAND, INC. 238      
410-431 6   9212 VERIZON MARYLAND, INC. 238      
410-431 7   9212 VERIZON MARYLAND, INC. 238      
410-431 8   9212 VERIZON MARYLAND, INC. 238      
410-431 9   9212 VERIZON MARYLAND, INC. 238      
410-432 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-432 0   876D ONVOY, LLC - MD 238   2024-05-23   
410-432 1   876D ONVOY, LLC - MD 238   2024-07-05   
410-432 2   318J COMCAST IP PHONE, LLC 238   2016-12-05   
410-432 3   9212 VERIZON MARYLAND, INC. 238      
410-432 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-09-30   
410-432 5   9212 VERIZON MARYLAND, INC. 238      
410-432 6   9212 VERIZON MARYLAND, INC. 238      
410-432 7   9212 VERIZON MARYLAND, INC. 238      
410-432 8   9212 VERIZON MARYLAND, INC. 238      
410-432 9   9212 VERIZON MARYLAND, INC. 238      
410-518 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-518 0   9212 VERIZON MARYLAND, INC. 238      
410-518 1   9212 VERIZON MARYLAND, INC. 238      
410-518 2   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 3   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 4   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 5   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 6   9212 VERIZON MARYLAND, INC. 238      
410-518 7   9212 VERIZON MARYLAND, INC. 238      
410-518 8   9212 VERIZON MARYLAND, INC. 238      
410-518 9   9212 VERIZON MARYLAND, INC. 238      
410-541 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-541 0   9212 VERIZON MARYLAND, INC. 238      
410-541 1   876D ONVOY, LLC - MD 238   2016-03-03   
410-541 2   9212 VERIZON MARYLAND, INC. 238      
410-541 3   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-04-30   
410-541 4   876D ONVOY, LLC - MD 238   2021-03-04   
410-541 5   876D ONVOY, LLC - MD 238   2021-03-04   
410-541 6   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-541 7   876D ONVOY, LLC - MD 238   2021-03-04   
410-541 8   876D ONVOY, LLC - MD 238   2024-12-14   
410-541 9   281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-12   
410-544 A SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      

1 2 3 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.