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.

Laurel, MD

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-264 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
240-264 0 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2007-02-08   
240-264 1 MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
240-264 2 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-264 3 MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
240-264 4 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-264 5 WASHDCCZDS0  4773 XO MARYLAND, LLC 236   2006-10-27   
240-264 6 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2005-07-25   
240-264 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2007-05-12   
240-264 8 MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
240-264 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2010-09-24   
240-278 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-278 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-09-05   
240-278 1 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2011-09-07   
240-278 2 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 3 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 5 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-15   
240-278 7 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-28   
240-278 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-09-07   
240-278 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-28   
240-280 A ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2021-01-26   
240-280 0 WASHDCCZDS0  4773 XO MARYLAND, LLC 236   2004-09-15   
240-280 1 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2006-08-01   
240-280 2 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2006-08-01   
240-280 3 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-10-01   
240-280 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-05-19   
240-280 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-280 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-07-30   
240-280 7 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2007-10-07   
240-280 8 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2002-01-31   
240-280 9 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-12-24   
240-294 A WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-294 0 WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-294 1 WASHDCSWXCY  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2005-10-17   
240-294 2 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236   2002-08-21   
240-294 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-07-30   
240-294 4 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2008-06-11   
240-294 5 WASHDCSWXCY  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2007-05-21   
240-294 6 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2007-09-20   
240-294 7 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2007-09-20   
240-294 8 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2015-09-15   
240-294 9 WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-295 A HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-295 0 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-295 1 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-295 2 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236   2008-07-15   
240-295 3 ARTNVAARXDY  318J COMCAST IP PHONE LLC 236   2008-06-11   
240-295 4 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      

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

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.