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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
301-632 5 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 6 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 7 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 8 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-632 9 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-633 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-634 A Washington Zone 2 MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-635 A Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
301-635 0 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-05-16   
301-635 1 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-05-16   
301-635 2 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-01-07   
301-635 3 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-09-14   
301-635 4 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-09-14   
301-635 5 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-09-14   
301-635 6 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-02-09   
301-635 7 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-02-09   
301-635 8 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-11-03   
301-635 9 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-09-07   
301-636 A Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-636 0 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2019-10-28   
301-636 1 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-636 2 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-636 3 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2013-08-27   
301-636 4 Washington Zone 5 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2010-01-09   
301-636 5 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-27   
301-636 6 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-636 7 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-27   
301-636 8 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-636 9 Washington Zone 5 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-637 A Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-637 0 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-13   
301-637 1 Washington Zone 10 MD   829J PAETEC ITEL, LLC 236   2005-12-15   
301-637 2 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-04-07   
301-637 3 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-04-07   
301-637 4 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-637 5 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   
301-637 6 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   
301-637 7 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   
301-637 8 Washington Zone 10 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-06-17   
301-637 9 Washington Zone 10 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2010-10-11   
301-638 A Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 0 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 1 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 2 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 3 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 4 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 5 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 6 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-638 7 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-638 8 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2019-02-19   
301-638 9 Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-639 A Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
301-640 A Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-640 0 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-05-20   
301-640 1 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-06-16   
301-640 2 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-640 3 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-640 4 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-640 5 Washington Zone 10 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-09-06   
301-640 6 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-08-17   
301-640 7 Washington Zone 10 MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-640 8 Washington Zone 10 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2013-08-06   
301-640 9 Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-05-20   
301-641 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-642 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-643 A Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-644 A Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 0 Frederick MD FRDRMDFRIMD  551G NUSO, LLC 240   2018-11-07   
301-644 1 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 2 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 3 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 4 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 5 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 6 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 7 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 8 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-644 9 Frederick MD FRDRMDFRDS1  9212 VERIZON MARYLAND, INC. 240      
301-645 A Waldorf MD WDRFMDWDDS0  9212 VERIZON MARYLAND, INC. 236      
301-646 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-647 A Washington Zone 13 MD WASHDCDP8MD  9748 AMERICAN MESSAGING SERVICES, LLC 236      
301-648 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-649 A Washington Zone 11 MD SLSPMDNWDS0  9212 VERIZON MARYLAND, INC. 236      
301-650 A Washington Zone 3 MD SLSPMDSSDS0  9212 VERIZON MARYLAND, INC. 236      
301-651 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-652 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-653 A Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-654 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-655 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-656 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-657 A Washington Zone 2 MD CHCHMDBEDS0  9212 VERIZON MARYLAND, INC. 236      
301-658 A Ashton MD WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-658 0 Ashton MD CHCHMDBE1MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2015-06-04   
301-658 1 Ashton MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-20   
301-658 2 Ashton MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-20   
301-658 3 Ashton MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-20   
301-658 4 Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2018-02-05   
301-658 5 Ashton MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-20   
301-658 6 Ashton MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-20   
301-658 7 Ashton MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-20   
301-658 8 Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-09-04   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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