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 11 12 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-689 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 0 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 1 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 2 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 3 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 4 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 5 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-06-16   
410-689 6 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 7 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-689 8 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-11-15   
410-689 9 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-09-01   
410-691 A FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 0 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 1 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 2 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 3 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-07-27   
410-691 4 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 5 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 6 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 7 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-691 8 BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 238   2003-02-26   
410-691 9 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 A FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 0 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 1 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-08-15   
410-694 2 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 3 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 4 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 5 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 6 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-06-08   
410-694 8 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-694 9 FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-760 A GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-761 A GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-762 A GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-762 0   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-762 1 GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-762 2 CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238   2004-11-27   
410-762 3   876D ONVOY, LLC - MD 238   2024-02-25   
410-762 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-01-15   
410-762 5 GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-762 6 GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-762 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
410-762 8 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-01-31   
410-762 9 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-01-31   
410-765 A FPATMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-766 A GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-768 A GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      
410-787 A GLBRMDGLRP0  9212 VERIZON MARYLAND, INC. 238      

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

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.