Local Calling Guide

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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-456 4 Dundalk MD   876D ONVOY, LLC - MD 238   2024-12-02   
667-456 5 Dundalk MD   876D ONVOY, LLC - MD 238   2024-12-02   
667-456 6 Dundalk MD   876D ONVOY, LLC - MD 238   2024-12-02   
667-456 7 Dundalk MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-11-01   
667-456 8 Dundalk MD   876D ONVOY, LLC - MD 238   2024-10-21   
667-456 9 Dundalk MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-01-08   
667-457 A Church Hill MD SLBRMD901MD  939H COMMIO, LLC 242   2024-01-25   
667-457 0 Church Hill MD   939H COMMIO, LLC 242   2024-01-25   
667-457 1 Church Hill MD   939H COMMIO, LLC 242   2024-01-25   
667-457 2 Church Hill MD   939H COMMIO, LLC 242   2024-01-25   
667-457 3 Church Hill MD   939H COMMIO, LLC 242   2024-01-25   
667-457 4 Church Hill MD   939H COMMIO, LLC 242   2024-01-25   
667-458 A Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-458 0 Annapolis MD   876D ONVOY, LLC - MD 238   2016-08-05   
667-458 1 Annapolis MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2024-06-27   
667-458 2 Annapolis MD   515J IP HORIZON LLC 238   2016-10-14   
667-458 3 Annapolis MD   515J IP HORIZON LLC 238   2016-10-14   
667-458 4 Annapolis MD   073H TELNYX LLC 238   2017-03-14   
667-458 5 Annapolis MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2019-01-19   
667-458 6 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2019-03-04   
667-458 7 Annapolis MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2016-08-26   
667-458 8 Annapolis MD   145J TERRA NOVA TELECOM INC. 238   2024-05-25   
667-458 9 Annapolis MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-07-09   
667-459 A Oxford MD SLBRMD901MD  939H COMMIO, LLC 242   2024-01-25   
667-459 0 Oxford MD   939H COMMIO, LLC 242   2024-01-25   
667-459 1 Oxford MD   939H COMMIO, LLC 242   2024-01-25   
667-459 2 Oxford MD   939H COMMIO, LLC 242   2024-01-25   
667-459 3 Oxford MD   939H COMMIO, LLC 242   2024-01-25   
667-459 4 Oxford MD   939H COMMIO, LLC 242   2024-01-25   
667-460 A Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-01-12   
667-460 0 Pikesville MD   876D ONVOY, LLC - MD 238   2024-02-25   
667-460 1 Pikesville MD   876D ONVOY, LLC - MD 238   2024-02-25   
667-460 2 Pikesville MD   876D ONVOY, LLC - MD 238   2024-02-25   
667-460 3 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-03-17   
667-460 4 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-03-17   
667-460 5 Pikesville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2024-02-23   
667-460 6 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-01-12   
667-460 7 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-01-12   
667-460 8 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-01-12   
667-460 9 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-01-12   
667-461 A Baltimore MD BLTQMD01DMD  598J FIVE9, INC. 238   2024-01-17   
667-461 0 Baltimore MD   598J FIVE9, INC. 238   2024-01-15   
667-461 1 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-10   
667-461 2 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-10   
667-461 3 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-31   
667-461 4 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-31   
667-461 5 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-31   
667-461 6 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-31   
667-461 7 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-10   
667-461 8 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-10   

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

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