Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

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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   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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