Local Calling Guide

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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
301-610 9 Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
301-612 A Washington Zone 14 (Baltimore LATA) MD BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
301-612 0 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-612 1 Washington Zone 14 (Baltimore LATA) MD   321J HD CARRIER LLC 238      
301-612 2 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-612 3 Washington Zone 14 (Baltimore LATA) MD   321J HD CARRIER LLC 238      
301-612 4 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-612 5 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-612 6 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
301-612 7 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-612 8 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-612 9 Washington Zone 14 (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238      
301-613 A Washington Zone 3 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 1 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 2 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-613 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
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      
301-617 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      
301-618 1 Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-618 2 Washington Zone 4 MD TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
301-618 3 Washington Zone 4 MD TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 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 TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 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      
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      
301-621 0 Washington Zone 14 (Baltimore LATA) MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
301-621 1 Washington Zone 14 (Baltimore LATA) MD EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238      
301-621 2 Washington Zone 14 (Baltimore LATA) MD EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238      
301-621 3 Washington Zone 14 (Baltimore LATA) MD CLMAMDOBDS0  9212 VERIZON MARYLAND, INC. 238      
301-621 4 Washington Zone 14 (Baltimore LATA) MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
301-621 5 Washington Zone 14 (Baltimore LATA) MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
301-621 6 Washington Zone 14 (Baltimore LATA) MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
301-621 7 Washington Zone 14 (Baltimore LATA) MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
301-621 8 Washington Zone 14 (Baltimore LATA) MD CLMAMDOBDS0  9212 VERIZON MARYLAND, INC. 238      
301-621 9 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      
301-623 6 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-623 7 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-623 8 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-623 9 Washington Zone 13 MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
301-624 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 0 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-624 1 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 2 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 3 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-624 4 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 5 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 6 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 7 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 8 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-624 9 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-625 A Washington Zone 3 MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-626 A Washington Zone 3 MD SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
301-627 A Washington Zone 15 MD MRBOMDMBDS0  9212 VERIZON MARYLAND, INC. 236      
301-628 A Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 0 Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 1 Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 2 Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 3 Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 4 Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 5 Washington Zone 3 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-628 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-628 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-628 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-629 A Washington Zone 14 (Baltimore LATA) MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
301-629 0 Washington Zone 14 (Baltimore LATA) MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
301-629 1 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 2 Washington Zone 14 (Baltimore LATA) MD CLMAMDCBRP0  9212 VERIZON MARYLAND, INC. 238      
301-629 3 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 4 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 5 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 6 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 7 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 8 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-629 9 Washington Zone 14 (Baltimore LATA) MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
301-630 A Washington Zone 6 MD TMHLMDTHDS0  9212 VERIZON MARYLAND, INC. 236      

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Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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