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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-503 A Tompkinsville MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-504 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-505 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-506 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-507 A Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-508 A Washington Zone 5 MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-509 A Washington Zone 14 (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
240-510 A Washington Zone 15 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-512 A Washington Zone 13 (Baltimore LATA) MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
240-513 A Hagerstown MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
240-514 A Washington Zone 11 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-515 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-516 A Washington Zone 12 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-517 A Laurel (Baltimore LATA) MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
240-518 A Waldorf MD ARTNVAARXKY  732J NUSO, LLC 236      
240-519 A Washington Zone 2 MD BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-520 A Hagerstown MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
240-521 A Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-522 A Cumberland MD FRDRMDFRKMD  5562 METROPCS, INC. 240      
240-523 A La Plata MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-524 A Laurel MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-525 A Washington Zone 15 MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-526 A Leonardtown MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-527 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
240-528 A Hughesville MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-529 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
240-530 A Waldorf MD ARTNVAARXJY  2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-531 A Washington Zone 3 MD WASHDC127MD  073H TELNYX LLC 236      
240-532 A Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-533 A Washington Zone 3 MD WASHDCDTDS1  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-534 A Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-535 A Washington Zone 3 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-536 A Ashton MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-537 A Hagerstown MD CMLDMDCMTMD  361H ATLANTECH ONLINE, INC. - MD 240      
240-538 A Leonardtown MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-539 A Washington Zone 4 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-540 A Washington Zone 13 (Baltimore LATA) MD   507J THE VOICE APPLICATION NETWORK, LLC 238   2025-04-26   
240-541 A Washington Zone 2 MD BTVLMD18GT6  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-542 A Washington Zone 13 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-543 A Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-544 A Washington Zone 14 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-545 A Washington Zone 15 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-546 A Washington Zone 16 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-547 A Laurel MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-548 A Washington Zone 14 MD CHCHMDBEPS0  2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-549 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-550 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-551 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-552 A Washington Zone 10 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-553 A Washington Zone 13 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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

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