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.

Glen Burnie, MD

1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-412 A   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-412 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-09-09   
410-412 1   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-412 2   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-412 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-08   
410-412 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-03-11   
410-412 5   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-412 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-04-23   
410-412 7   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-412 8   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-412 9   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-424 A GLBRMDGLDS0  9212 VERIZON MARYLAND, INC. 238      
410-424 0   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-04-30   
410-424 1   9212 VERIZON MARYLAND, INC. 238      
410-424 2   9212 VERIZON MARYLAND, INC. 238      
410-424 3   9212 VERIZON MARYLAND, INC. 238      
410-424 4   9212 VERIZON MARYLAND, INC. 238      
410-424 5   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
410-424 6   876D ONVOY, LLC - MD 238   2015-05-11   
410-424 7   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
410-424 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-10-09   
410-424 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-10-09   
410-487 A BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-487 0   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-487 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-02-02   
410-487 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-04-02   
410-487 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-05-03   
410-487 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-07-02   
410-487 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-08-02   
410-487 6   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-05-02   
410-487 7   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-487 8   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-487 9   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
410-508 A GLBRMDGLDS0  9212 VERIZON MARYLAND, INC. 238      
410-508 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-11-19   
410-508 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-11-19   
410-508 2   9212 VERIZON MARYLAND, INC. 238      
410-508 3   9212 VERIZON MARYLAND, INC. 238      
410-508 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-11-19   
410-508 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-12-07   
410-508 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-12-07   
410-508 7   9212 VERIZON MARYLAND, INC. 238      
410-508 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-12-07   
410-508 9   082H LOCAL ACCESS LLC - MD 238   2016-05-31   
410-553 A GLBRMDGLDS0  9212 VERIZON MARYLAND, INC. 238      
410-553 0   9212 VERIZON MARYLAND, INC. 238      
410-553 1   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-08-06   
410-553 2   9212 VERIZON MARYLAND, INC. 238      
410-553 3   9212 VERIZON MARYLAND, INC. 238      
410-553 4   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-03-20   

1 2 3 4 5 6 7 8 9 10 >>

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.