Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington Zone 15 (Baltimore LATA), MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-759 A   566J RADIANTIQ LLC 238   2021-05-22   
240-759 2   566J RADIANTIQ LLC 238   2021-05-22   
240-759 7   624H ONVOY SPECTRUM, LLC 238   2021-05-23   
240-763 A BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
240-763 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-11-30   
240-763 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-28   
240-763 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-28   
240-763 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-25   
240-763 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-25   
240-763 5 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2019-03-07   
240-763 6 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2019-06-19   
240-763 7 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
240-763 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
240-763 9 BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
301-327 A BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2021-01-13   
301-327 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-09-01   
301-327 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-01-02   
301-327 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-07-26   
301-327 3 BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2007-12-01   
301-327 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-17   
301-327 5 BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2008-02-29   
301-327 6 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-09-30   
301-327 7 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2007-08-20   
301-327 8 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-09-16   
301-327 9 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-03-15   
301-494 A PRFRMDPFRS1  9212 VERIZON MARYLAND, INC. 238      
301-494 0 PRFRMDPFRS1  9212 VERIZON MARYLAND, INC. 238      
301-494 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-06-25   
301-494 2 BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2015-03-27   
301-494 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-03-06   
301-494 4 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2011-03-11   
301-494 5 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2011-06-17   
301-494 6   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
301-494 7 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2011-06-17   
301-494 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-05   
301-494 9 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-05   
301-812 A NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
301-812 0 NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
301-812 1 NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
301-812 2 NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
301-812 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-09-05   
301-812 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
301-812 5 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2013-08-28   
301-812 6 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2013-11-26   
301-812 7 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2010-10-04   
301-812 8 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-22   
301-812 9 HRNDVACKDS0  1958 ATX TELECOMMUNICATIONS SERVICES, LTD 238   2004-01-31   
301-855 A NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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