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
667-541 A Glen Burnie MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-541 0 Glen Burnie MD   876D ONVOY, LLC - MD 238   2026-08-21   
667-541 1 Glen Burnie MD   876D ONVOY, LLC - MD 238   2026-08-21   
667-541 8 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-09-04   
667-541 9 Glen Burnie MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-542 A Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-14  2026-10-16 
667-543 A Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-543 4 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-543 5 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-543 6 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-543 7 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-543 8 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-543 9 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 A Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 0 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 1 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 2 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 3 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 4 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 5 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 6 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 7 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 8 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-544 9 Pikesville MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-05-02   
667-545 A Warwick MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC.- MD 242      
667-545 0 Warwick MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-12-07   
667-545 1 Warwick MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-12-07   
667-545 2 Warwick MD SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-07-31   
667-545 3 Warwick MD SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-07-31   
667-545 4 Warwick MD SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-07-31   
667-545 5 Warwick MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-12-07   
667-545 6 Warwick MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-04-02   
667-545 7 Warwick MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-04-02   
667-545 8 Warwick MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-10   
667-545 9 Warwick MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-10   
667-546 A Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-05-30   
667-546 0 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-05-30   
667-546 1 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-05-30   
667-546 7 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-07-04   
667-546 8 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-07-04   
667-546 9 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2026-07-04   
667-547 A Baltimore MD BLTMMDSNOMD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 238   2026-07-21   
667-547 0 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-09-13   
667-547 1 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-08-08   
667-547 2 Baltimore MD   490J BOOST SUBSCRIBERCO L.L.C. 238   2026-08-13   
667-547 3 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-09-13   
667-547 4 Baltimore MD   820C INTRADO COMMUNICATIONS, LLC 238   2026-09-13   
667-547 5 Baltimore MD BLTMMDSNOMD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 238   2026-07-21   
667-547 6 Baltimore MD   490J BOOST SUBSCRIBERCO L.L.C. 238   2026-09-21   
667-547 7 Baltimore MD BLTQMD019MD  490J BOOST SUBSCRIBERCO L.L.C. 238   2026-10-26   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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