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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-264 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
240-264 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2007-02-08   
240-264 1   9212 VERIZON MARYLAND, INC. 236      
240-264 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-264 3   9212 VERIZON MARYLAND, INC. 236      
240-264 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-264 5   4773 XO MARYLAND, LLC 236   2006-10-27   
240-264 6   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2005-07-25   
240-264 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2007-05-12   
240-264 8   9212 VERIZON MARYLAND, INC. 236      
240-264 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2010-09-24   
240-278 A ANJTMDAHCM2  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-09-05   
240-278 0   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-09-05   
240-278 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2011-09-07   
240-278 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 3   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 4   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-02   
240-278 6   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-15   
240-278 7   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-28   
240-278 8   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-09-07   
240-278 9   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-10-28   
240-280 A ALXNVAGBPS1  107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
240-280 0   4773 XO MARYLAND, LLC 236   2004-09-15   
240-280 1   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2006-08-01   
240-280 2   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2006-08-01   
240-280 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-10-01   
240-280 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-05-19   
240-280 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-09   
240-280 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-07-30   
240-280 7   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2007-10-07   
240-280 8   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2002-01-31   
240-280 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-12-24   
240-294 A WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-294 0   4773 XO MARYLAND, LLC 236      
240-294 1   4716 PAETEC COMMUNICATIONS, INC. - MD 236   2005-10-17   
240-294 2   9212 VERIZON MARYLAND, INC. 236   2002-08-21   
240-294 3   071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-07-30   
240-294 4   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2008-06-11   
240-294 5   4716 PAETEC COMMUNICATIONS, INC. - MD 236   2007-05-21   
240-294 6   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2007-09-20   
240-294 7   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2007-09-20   
240-294 8   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2015-09-15   
240-294 9   4773 XO MARYLAND, LLC 236      
240-295 A HRNDVA13DS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-295 0   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-295 1   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-295 2   9212 VERIZON MARYLAND, INC. 236   2008-07-15   
240-295 3   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2008-06-11   
240-295 4   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      

1 2 3 4 5 6 7 8 9 >>

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.