Local Calling Guide

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Search area code/prefix (NPA/NXX)
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OCN: 9212 VERIZON MARYLAND, INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-543 3 Arbutus MD ARBTMDARDS0  238      
443-543 5 Arbutus MD ARBTMDARDS0  238      
443-546 A Columbia MD CLMAMDCBRP0  238      
443-546 1 Columbia MD CLMAMDCBRP0  238      
443-550 6 North Beach MD NRBHMDNEDS0  238   2004-10-01   
443-552 A Baltimore MD BLTMMDMDDS0  238      
443-552 2 Baltimore MD BLTMMDMDDS0  238      
443-556 A Cockeysville MD CYVLMDDADS0  238      
443-558 5 Aberdeen MD ABRDMDABDS0  236   2010-05-10   
443-572 A Glen Burnie MD GLBRMDGLRP0  238      
443-572 0 Glen Burnie MD GLBRMDGLRP0  238      
443-572 5 Glen Burnie MD GLBRMDGLRP0  238      
443-572 8 Glen Burnie MD GLBRMDGLRP0  238      
443-612 A Catonsville MD CTVLMDCTDS0  238      
443-634 A Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236      
443-634 0 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 1 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 2 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 3 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 4 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 5 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 6 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 7 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 8 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-634 9 Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236   2012-01-08   
443-641 2 Pikesville MD OWMLMDOMDS0  238   2004-10-10   
443-641 5 Pikesville MD OWMLMDOMDS0  238   2004-10-10   
443-642 2 Baltimore MD BLTMMDCHDS2  238   2007-01-08   
443-642 3 Baltimore MD BLTMMDCHDS2  238   2007-01-08   
443-642 4 Baltimore MD BLTMMDCHDS2  238   2007-01-08   
443-642 5 Baltimore MD BLTMMDCHDS2  238   2007-01-08   
443-642 6 Baltimore MD BLTMMDCHDS2  238   2007-01-08   
443-643 A Bel Air MD BLARMDBLDS0  238      
443-643 1 Bel Air MD BLARMDBLDS0  238      
443-643 2 Bel Air MD BLARMDBLDS0  238      
443-643 3 Bel Air MD BLARMDBLDS0  238      
443-643 4 Bel Air MD BLARMDBLDS0  238      
443-654 A Waterloo (Washington DC LATA) MD ODTNMDAUDS0  236      
443-654 0 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 1 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 2 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 3 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 4 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 5 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 6 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 7 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 8 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-654 9 Waterloo (Washington DC LATA) MD   236   2008-09-27   
443-663 A Woodlawn MD WDLWMDWLDS0  238      
443-663 6 Woodlawn MD WDLWMDWLDS0  238      
443-663 8 Woodlawn MD WDLWMDWLDS0  238      
443-678 A Parkville MD WHMRMDWMRS2  238      
443-678 1 Parkville MD WHMRMDWMRS2  238      
443-682 6 Baltimore MD BLTMMDCHDS2  238   2007-06-02   
443-734 A Severn MD ODTNMDONDS0  238      
443-734 9 Severn MD ODTNMDONDS0  238      
443-755 A Waterloo MD EKRGMDELDS0  238      
443-755 0 Waterloo MD EKRGMDELDS0  238      
443-755 1 Waterloo MD EKRGMDELDS0  238      
443-755 8 Waterloo MD EKRGMDELDS0  238      
443-755 9 Waterloo MD EKRGMDELDS0  238      
443-770 A Armiger-Gibson Island MD ARMGMDARDS0  238      
443-770 0 Armiger-Gibson Island MD ARMGMDARDS0  238      
443-770 5 Armiger-Gibson Island MD ARMGMDARDS0  238   2005-12-14   
443-770 8 Armiger-Gibson Island MD ARMGMDARDS0  238      
443-770 9 Armiger-Gibson Island MD ARMGMDARDS0  238      
443-777 A Essex MD ESSXMDEXDS0  238      
443-777 1 Essex MD ESSXMDEXDS0  238      
443-777 2 Essex MD ESSXMDEXDS0  238      
443-777 3 Essex MD ESSXMDEXDS0  238      
443-777 4 Essex MD ESSXMDEXDS0  238      
443-777 5 Essex MD ESSXMDEXDS0  238      
443-777 6 Essex MD ESSXMDEXDS0  238      
443-777 7 Essex MD ESSXMDEXDS0  238      
443-777 8 Essex MD ESSXMDEXDS0  238      
443-778 A Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 0 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 1 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236   2002-06-25   
443-778 2 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236   2003-02-15   
443-778 3 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 4 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 5 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 6 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 7 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 8 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236      
443-778 9 Waterloo (Washington DC LATA) MD LARLMDLRDS0  236   2003-02-15   
443-792 A Brooklyn Park-Linthicum MD BRKLMDBKRP0  238      
443-792 2 Brooklyn Park-Linthicum MD BRKLMDBKRP0  238   2007-11-17   
443-792 3 Brooklyn Park-Linthicum MD BRKLMDBKRP0  238   2007-11-17   
443-840 1 Catonsville MD CTVLMDCTDS0  238   2008-07-10   
443-840 2 Catonsville MD CTVLMDCTDS0  238   2008-07-10   
443-840 3 Catonsville MD CTVLMDCTDS0  238   2008-07-10   
443-840 4 Catonsville MD CTVLMDCTDS0  238   2008-07-10   
443-840 5 Catonsville MD CTVLMDCTDS0  238   2008-07-10   
443-841 A Towson MD CYVLMDCKDS0  238      
443-841 3 Towson MD CYVLMDCKDS0  238      
443-843 A Havre de Grace MD HDGRMDHVDS0  238      
443-843 5 Havre de Grace MD HDGRMDHVDS0  238      
443-843 6 Havre de Grace MD HDGRMDHVDS0  238      
443-843 7 Havre de Grace MD HDGRMDHVDS0  238      

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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