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.

Fork, MD

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-405 A FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 0 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 1 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 2 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 3 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-405 4 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 5 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-405 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-02-27   
410-405 8 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 9 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-510 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-510 0 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-510 1 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-510 2 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2020-07-08   
410-510 3 BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-510 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2020-07-08   
410-510 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-510 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2020-07-08   
410-510 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-510 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2022-10-17   
410-510 9   145J TERRA NOVA TELECOM INC. 238   2021-01-27   
410-515 A WNRNMDWNRS1  9212 VERIZON MARYLAND, INC. 238      
410-538 A EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-538 0 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-09-12   
410-538 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-03-07   
410-538 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-21   
410-538 3 EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-538 4 EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-538 5 EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-538 6 EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-538 7 EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-538 8 EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-557 A JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-557 0 JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-557 1 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-04-04   
410-557 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-557 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-557 4 JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-557 5 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2006-05-13   
410-557 6 JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-557 7 JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-557 8 JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-557 9 JRVLMDJERS0  9212 VERIZON MARYLAND, INC. 238      
410-575 A ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 238      
410-575 0   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-575 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-15   
410-575 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-575 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-575 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
410-575 5 ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 238      
410-575 6 ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 238      
410-575 7 ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 238      
410-575 8 ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 238      
410-575 9 ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 238      
410-592 A FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 0 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 1   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-592 2 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 3 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-592 5 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 6 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 7 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 8 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-592 9 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-593 A FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-593 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-02-25   
410-593 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-07-29   
410-593 2 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-593 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-02-16   
410-593 4 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-593 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-593 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-593 7 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2011-12-17   
410-593 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-02-25   
410-593 9 FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-679 A EDWDMDEGDS0  9212 VERIZON MARYLAND, INC. 238      
410-698 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-698 0   829J PAETEC ITEL, LLC 238   2003-02-26   
410-698 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-08   
410-698 2 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-05-16   
410-698 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-05-16   
410-698 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
410-698 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-08-17   
410-698 6 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-12-28   
410-698 7 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-09-15   
410-698 8 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-09-15   
410-698 9 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-803 A BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 0 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 1 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 2 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-10-19   
410-803 4 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-31   
410-803 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-31   
410-803 7 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 8 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-803 9 BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      

1 2 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.