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.

NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-623 2 Marion MD   9212 VERIZON MARYLAND, INC. 242      
410-623 3 Marion MD   876D ONVOY, LLC - MD 242   2019-03-04   
410-623 4 Marion MD   145J TERRA NOVA TELECOM INC. 242   2025-05-07   
410-623 5 Marion MD   073H TELNYX LLC 242   2017-09-13   
410-623 6 Marion MD   145J TERRA NOVA TELECOM INC. 242   2024-09-13   
410-623 7 Marion MD   876D ONVOY, LLC - MD 242   2017-04-14   
410-623 8 Marion MD   9212 VERIZON MARYLAND, INC. 242      
410-623 9 Marion MD   792K CHARTER IP ENABLED SERVICES, LLC 242   2020-09-25   
410-624 A Baltimore MD BLTMMDEDRP0  9212 VERIZON MARYLAND, INC. 238      
410-624 0 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-624 1 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-624 2 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-05-24   
410-624 3 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-624 4 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-624 5 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2015-09-18   
410-624 6 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-624 7 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2015-10-22   
410-624 8 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-624 9 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-625 A Baltimore MD BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-626 A Annapolis MD ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
410-626 0 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 1 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 2 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 3 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 4 Annapolis MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-626 5 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 6 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 7 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 8 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-626 9 Annapolis MD   9212 VERIZON MARYLAND, INC. 238      
410-627 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-628 A Cockeysville MD CYVLMDCKDS0  9212 VERIZON MARYLAND, INC. 238      
410-628 0 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 1 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 2 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 3 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 4 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 5 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 6 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 7 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 8 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-628 9 Cockeysville MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-08-13   
410-629 A Berlin MD BRLNMDBLRS1  9212 VERIZON MARYLAND, INC. 242      
410-629 0 Berlin MD   9212 VERIZON MARYLAND, INC. 242      
410-629 1 Berlin MD   9212 VERIZON MARYLAND, INC. 242      
410-629 2 Berlin MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-03-24   
410-629 3 Berlin MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-02   
410-629 4 Berlin MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
410-629 5 Berlin MD   281E YMAX COMMUNICATIONS CORP. - MD 242   2011-04-03   
410-629 6 Berlin MD   9212 VERIZON MARYLAND, INC. 242   2004-10-06   
410-629 7 Berlin MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
410-629 8 Berlin MD   281E YMAX COMMUNICATIONS CORP. - MD 242   2011-04-03   
410-629 9 Berlin MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 242   2005-03-24   
410-630 A Chase MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-630 0 Chase MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-630 1 Chase MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-12-12   
410-630 2 Chase MD   318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-630 3 Chase MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-14   
410-630 4 Chase MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-02-07   
410-630 5 Chase MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-14   
410-630 6 Chase MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-14   
410-630 7 Chase MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-14   
410-630 8 Chase MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-12-12   
410-630 9 Chase MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-631 A Baltimore MD DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238      
410-631 0 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 1 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 2 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 3 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2020-10-12   
410-631 4 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 5 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 6 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 7 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 8 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-631 9 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-632 A Snow Hill MD SNHLMDSHRS0  9212 VERIZON MARYLAND, INC. 242      
410-632 0 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-632 1 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-632 2 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-632 3 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-632 4 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-632 5 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-632 6 Snow Hill MD   876D ONVOY, LLC - MD 242   2018-09-13   
410-632 7 Snow Hill MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-632 8 Snow Hill MD   073H TELNYX LLC 242   2017-09-13   
410-632 9 Snow Hill MD   9212 VERIZON MARYLAND, INC. 242      
410-633 A Baltimore MD DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238      
410-634 A Ridgely MD HLBOMDTKRS0  9212 VERIZON MARYLAND, INC. 242      
410-634 0 Ridgely MD   624H ONVOY SPECTRUM, LLC 242   2023-09-02   
410-634 1 Ridgely MD   9212 VERIZON MARYLAND, INC. 242      
410-634 2 Ridgely MD   9212 VERIZON MARYLAND, INC. 242      
410-634 3 Ridgely MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-634 4 Ridgely MD   228C IDT AMERICA, CORP. - MD 242   2012-06-01   
410-634 5 Ridgely MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
410-634 6 Ridgely MD   073H TELNYX LLC 242   2017-09-13   
410-634 7 Ridgely MD   876D ONVOY, LLC - MD 242   2017-04-14   
410-634 8 Ridgely MD   318J COMCAST IP PHONE, LLC 242   2006-07-31   
410-634 9 Ridgely MD   9212 VERIZON MARYLAND, INC. 242   2003-12-31   
410-635 A New Windsor MD NWWNMDNWRS0  9212 VERIZON MARYLAND, INC. 238      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 >>

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.