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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-613 4 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 5 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-614 A Washington Zone 13 MD CLPKMDBWDS0  9212 VERIZON MARYLAND, INC. 236      
301-615 A Washington Zone 13 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-616 A Oakland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 0 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 1 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 2 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 3 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 4 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 5 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 6 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 7 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 8 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-616 9 Oakland MD   4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240      
301-617 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
301-618 A Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 0 Washington Zone 4 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-618 1 Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 2 Washington Zone 4 MD   829J PAETEC ITEL, LLC 236      
301-618 3 Washington Zone 4 MD   829J PAETEC ITEL, LLC 236      
301-618 4 Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 5 Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 6 Washington Zone 4 MD   829J PAETEC ITEL, LLC 236      
301-618 7 Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 8 Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 9 Washington Zone 4 MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-619 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-620 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-621 A Washington Zone 14 (Baltimore LATA) MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
301-622 A Washington Zone 3 MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-623 A Washington Zone 13 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 0 Washington Zone 13 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 1 Washington Zone 13 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 2 Washington Zone 13 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 3 Washington Zone 13 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 4 Washington Zone 13 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 5 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-623 6 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-623 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-623 8 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-623 9 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-15   
301-624 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 0 Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2019-08-30   
301-624 1 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 2 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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