Local Calling Guide

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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
667-407 4   876D ONVOY, LLC - MD 238   2022-07-22   
667-407 5   876D ONVOY, LLC - MD 238   2022-07-22   
667-407 6   876D ONVOY, LLC - MD 238   2022-07-22   
667-407 7   876D ONVOY, LLC - MD 238   2022-07-22   
667-407 8   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2022-07-23   
667-407 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2022-07-23   
667-414 A BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-414 0   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-12-01   
667-414 1   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-12-01   
667-414 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2023-04-14   
667-414 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2023-04-14   
667-414 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2023-04-14   
667-414 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2023-04-14   
667-414 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-05-05   
667-414 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-05-05   
667-414 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-02-12   
667-414 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-02-12   
667-422 A BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238      
667-422 0   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 1   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 2   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 3   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 4   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 5   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 6   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 7   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 8   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-422 9   508J CENTURYLINK COMMUNICATIONS, LLC 238   2023-02-21   
667-425 A BLTMMDSNLMD  732J NUSO, LLC 238      
667-425 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-05-06   
667-425 1   732J NUSO, LLC 238   2023-04-03   
667-425 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-05-17   
667-425 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-05-17   
667-425 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-05-17   
667-425 5   876D ONVOY, LLC - MD 238   2023-06-16   
667-425 6   876D ONVOY, LLC - MD 238   2023-06-16   
667-425 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-05-06   
667-425 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-05-06   
667-425 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-05-06   
667-434 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-434 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-06-19   
667-434 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-06-19   
667-434 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-06-19   
667-435 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-435 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-23   
667-435 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-23   
667-435 2   876D ONVOY, LLC - MD 238   2023-07-21   
667-435 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-28   
667-435 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-28   
667-435 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-28   
667-435 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-28   
667-435 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-19   
667-435 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-07-23   
667-435 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-08-06   
667-437 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-437 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-01   
667-437 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-01   
667-437 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-01   
667-437 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-01   
667-437 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-01   
667-440 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-440 0   876D ONVOY, LLC - MD 238   2023-09-26   
667-440 1   876D ONVOY, LLC - MD 238   2023-09-26   
667-440 2   876D ONVOY, LLC - MD 238   2023-09-25   
667-440 3   876D ONVOY, LLC - MD 238   2023-09-25   
667-440 4   876D ONVOY, LLC - MD 238   2023-09-25   
667-440 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-444 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-444 0   515J IP HORIZON LLC 238   2015-11-20   
667-444 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-02-06   
667-444 2   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2016-11-05   
667-444 3   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2016-11-05   
667-444 4   876D ONVOY, LLC - MD 238   2015-10-15   
667-444 5   876D ONVOY, LLC - MD 238   2015-10-15   
667-444 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-12   
667-444 7   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2016-11-05   
667-444 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-02-06   
667-444 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-02-06   
667-461 A BLTQMD01DMD  598J FIVE9, INC. 238   2024-01-17   
667-461 0   598J FIVE9, INC. 238   2024-01-15   
667-461 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-10   
667-461 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-10   
667-461 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-31   
667-461 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-12-31   

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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