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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
301-318 4 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 5 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 6 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 7 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 8 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-318 9 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-319 A Washington Zone 2 MD BTHSMDWWDS0  9212 VERIZON MARYLAND, INC. 236      
301-320 A Washington Zone 2 MD BTHSMDWADS0  9212 VERIZON MARYLAND, INC. 236      
301-321 A Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
301-321 0 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-321 1 Washington Zone 11 MD SLSPMD913MD  939H COMMIO, LLC 236   2021-08-29   
301-321 2 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-321 3 Washington Zone 11 MD   829J PAETEC ITEL, LLC 236   2014-06-09   
301-321 4 Washington Zone 11 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2016-09-01   
301-321 5 Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236   2005-12-12   
301-321 6 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
301-321 7 Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-01-07   
301-321 8 Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-01-07   
301-321 9 Washington Zone 11 MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-24   
301-322 A Washington Zone 4 MD LDVRMDLODS0  9212 VERIZON MARYLAND, INC. 236      
301-323 A Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 0 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 1 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 2 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 3 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-03-07   
301-323 4 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 5 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-03-07   
301-323 6 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 7 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-323 8 Laurel MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
301-323 9 Laurel MD LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
301-324 A Washington Zone 5 MD CPHGMDCADS0  9212 VERIZON MARYLAND, INC. 236      
301-325 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-326 A Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
301-326 0 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-08-19   
301-326 1 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-10-09   
301-326 2 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-10-09   
301-326 3 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-02-29   
301-326 4 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-10-09   
301-326 5 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-11-06   
301-326 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-05-16   
301-326 7 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-05-27   
301-326 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-09-03   
301-326 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-01-11   
301-327 A Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
301-327 0 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-09-01   
301-327 1 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-01-02   
301-327 2 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-07-26   
301-327 3 Washington Zone 15 (Baltimore LATA) MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2007-12-01   
301-327 4 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-17   
301-327 5 Washington Zone 15 (Baltimore LATA) MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-02-29   
301-327 6 Washington Zone 15 (Baltimore LATA) MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-09-30   
301-327 7 Washington Zone 15 (Baltimore LATA) MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2007-08-20   
301-327 8 Washington Zone 15 (Baltimore LATA) MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-09-16   
301-327 9 Washington Zone 15 (Baltimore LATA) MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-03-15   
301-328 A Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
301-328 0 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-08-05   
301-328 1 Washington Zone 3 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-12-14   
301-328 2 Washington Zone 3 MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-328 3 Washington Zone 3 MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-328 4 Washington Zone 3 MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-328 5 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-10-09   
301-328 6 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-01-15   
301-328 7 Washington Zone 3 MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-10-09   
301-328 8 Washington Zone 3 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-11-07   
301-328 9 Washington Zone 3 MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-329 A Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
301-329 0 Ashton (Baltimore LATA) MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
301-329 1 Ashton (Baltimore LATA) MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
301-329 2 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
301-329 3 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-04-02   
301-329 4 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
301-329 5 Ashton (Baltimore LATA) MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-24   
301-329 6 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-10-04   
301-329 7 Ashton (Baltimore LATA) MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
301-329 8 Ashton (Baltimore LATA) MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-01-05   
301-329 9 Ashton (Baltimore LATA) MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-05   
301-330 A Gaithersburg MD GTBGMDGBPS0  9212 VERIZON MARYLAND, INC. 236      
301-331 A Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 0 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 1 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 2 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 3 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 4 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 5 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 6 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 7 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-331 8 Hagerstown MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2004-04-05   
301-331 9 Hagerstown MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240      
301-332 A Washington Zone 3 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-333 A Washington Zone 5 MD CPHGMDCADS0  9212 VERIZON MARYLAND, INC. 236      
301-334 A Oakland MD OKLDMDOKDS0  9212 VERIZON MARYLAND, INC. 240      
301-335 A Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 0 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 1 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 2 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 3 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 4 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 5 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-335 6 Washington Zone 2 MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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