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.

Bel Air, MD

1 2 3 4 5 6 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-322 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-399 A CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-399 0 CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-399 1 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-11   
410-399 2 DRTNMDDRRS0  9212 VERIZON MARYLAND, INC. 238      
410-399 3 BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD 238   2003-03-11   
410-399 4 CCVLMDCHRS0  9212 VERIZON MARYLAND, INC. 238      
410-399 5 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-05   
410-399 6 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-399 7 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-399 8 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-11   
410-399 9 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 A BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 0 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 1 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 2 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 3 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 4 BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-420 5 BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2020-05-29   
410-420 6 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 7 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 8 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 9 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 A BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 0 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 1 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 2 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 3 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 4 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 5 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 6 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2004-06-10   
410-588 7 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2004-06-10   
410-588 8 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-588 9 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-09-19   
410-638 A BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-652 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-776 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-776 0 BLTMMD91DS2  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-776 1 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-08-26   
410-776 2 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-776 3 BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2005-03-10   
410-776 4 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-08-26   
410-776 5 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-08-26   
410-776 6 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-776 7 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-04-04   
410-776 8 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-11   
410-776 9 EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-11   
410-809 A BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
410-809 0 BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
410-809 1 BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      

1 2 3 4 5 6 >>

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.