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.

Reisterstown, MD

1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-239 A HMPSMDHERS1  9212 VERIZON MARYLAND, INC. 238      
410-517 A RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 0 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 1 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 2 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 3 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 4 BLTMMDCHFMD  5562 METROPCS, INC. 238   2006-07-09   
410-517 5 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 6 BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-517 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-08   
410-517 8 RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-517 9 BLTMMDCHFMD  5562 METROPCS, INC. 238   2006-05-01   
410-526 A RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-702 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-702 0 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-07-12   
410-702 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
410-702 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-702 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-07-12   
410-702 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
410-702 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-01-17   
410-702 6 PIVLMDPKFMD  9170 BROADVIEW NETWORKS, INC. - MD 238   2009-08-20   
410-702 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-702 8 BLTMMDCHFMD  5562 METROPCS, INC. 238   2016-10-01   
410-702 9 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-833 A RSTWMDRSDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 A WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 0 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 1   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
410-840 2 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 3 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 4 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 5 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 6 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-12-15   
410-840 7 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
410-840 8 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 9 WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-876 A WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
443-273 A CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-273 0 CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-273 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-273 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-22   
443-273 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-09-21   
443-273 4 BLTMMDCHFMD  5562 METROPCS, INC. 238   2014-09-28   
443-273 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-273 6 BLTMMDCHFMD  5562 METROPCS, INC. 238   2014-11-03   
443-273 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-273 8   515J IP HORIZON LLC 238   2016-01-04   
443-273 9 CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-381 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-381 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-09-23   

1 2 3 >>

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.