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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
240-808 A Leonardtown MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-809 A Smithsburg MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-810 A Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-812 A Poolesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-813 A Gaithersburg MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-814 A Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-815 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-816 A Keedysville MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240      
240-817 A Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-818 A Myersville MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-819 A Williamsport MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-820 A Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
240-821 A Washington Zone 3 MD   829J PAETEC ITEL, LLC 236   2025-04-02   
240-822 A New Market MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-823 A Brandywine MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-824 A Frostburg MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-825 A Washington Zone 4 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-826 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-827 A Lonaconing MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-828 A Washington Zone 4 MD WASHDC127MD  073H TELNYX LLC 236      
240-829 A Emmitsburg MD HGTWMD53DS0  469J CORETEL MARYLAND, INC. - MD 240      
240-830 A Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
240-831 A Frederick MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-832 A Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-833 A Washington Zone 11 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-834 A Kitzmiller MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-835 A Clear Spring MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240      
240-836 A Mount Savage MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-837 A Hughesville MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-838 A Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-839 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-840 A Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240      
240-841 A Laurel (Baltimore LATA) MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
240-842 A Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
240-843 A Washington Zone 13 (Baltimore LATA) MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
240-844 A Ridge MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-845 A Washington Zone 13 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 A Washington Zone 16 MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-847 A Washington Zone 3 MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-848 A Gaithersburg MD BTVLMD12CMA  5562 METROPCS, INC. 236      
240-849 A Hagerstown MD FRDRMDFRXAX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 240      
240-850 A Hagerstown MD HGTWMD53DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 240      
240-851 A McCoole MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-852 A Myersville MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
240-853 A Laurel MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-854 A Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-855 A Washington Zone 2 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-856 A Laurel (Baltimore LATA) MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
240-857 A Washington Zone 5 MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
240-858 A Washington Zone 2 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      

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

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