Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 9212 VERIZON MARYLAND, INC.

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
410-621 A Princess Anne MD PRANMDPARS1  242      
410-621 0 Princess Anne MD PRANMDPARS1  242      
410-621 1 Princess Anne MD PRANMDPARS1  242   2002-06-01   
410-621 2 Princess Anne MD PRANMDPARS1  242   2002-06-01   
410-621 3 Princess Anne MD PRANMDPARS1  242   2002-06-01   
410-623 A Marion MD MARNMDMARS1  242      
410-623 2 Marion MD MARNMDMARS1  242      
410-623 8 Marion MD MARNMDMARS1  242      
410-624 A Baltimore MD BLTMMDEDRP0  238      
410-624 0 Baltimore MD BLTMMDEDRP0  238      
410-624 1 Baltimore MD BLTMMDEDRP0  238      
410-624 3 Baltimore MD BLTMMDEDRP0  238      
410-624 4 Baltimore MD BLTMMDEDRP0  238      
410-625 A Baltimore MD BLTMMDCHDS3  238      
410-626 A Annapolis MD ANNPMDANDS0  238      
410-628 A Cockeysville MD CYVLMDCKDS0  238      
410-628 0 Cockeysville MD CYVLMDCKDS0  238      
410-628 1 Cockeysville MD CYVLMDCKDS0  238      
410-628 2 Cockeysville MD CYVLMDCKDS0  238      
410-628 3 Cockeysville MD CYVLMDCKDS0  238      
410-628 4 Cockeysville MD CYVLMDCKDS0  238      
410-628 5 Cockeysville MD CYVLMDCKDS0  238      
410-628 6 Cockeysville MD CYVLMDCKDS0  238      
410-628 7 Cockeysville MD CYVLMDCKDS0  238      
410-628 8 Cockeysville MD CYVLMDCKDS0  238      
410-629 A Berlin MD BRLNMDBLRS1  242      
410-629 0 Berlin MD BRLNMDBLRS1  242      
410-629 1 Berlin MD BRLNMDBLRS1  242      
410-629 6 Berlin MD BRLNMDBLRS1  242   2004-10-06   
410-631 A Baltimore MD DNDLMDDNDS0  238      
410-631 0 Baltimore MD DNDLMDDNDS0  238      
410-631 1 Baltimore MD DNDLMDDNDS0  238      
410-631 2 Baltimore MD DNDLMDDNDS0  238      
410-631 4 Baltimore MD DNDLMDDNDS0  238      
410-631 5 Baltimore MD DNDLMDDNDS0  238      
410-631 6 Baltimore MD DNDLMDDNDS0  238      
410-631 7 Baltimore MD DNDLMDDNDS0  238      
410-631 8 Baltimore MD DNDLMDDNDS0  238      
410-631 9 Baltimore MD DNDLMDDNDS0  238      
410-632 A Snow Hill MD SNHLMDSHRS0  242      
410-632 0 Snow Hill MD SNHLMDSHRS0  242      
410-632 1 Snow Hill MD SNHLMDSHRS0  242      
410-632 2 Snow Hill MD SNHLMDSHRS0  242      
410-632 3 Snow Hill MD SNHLMDSHRS0  242      
410-632 4 Snow Hill MD SNHLMDSHRS0  242      
410-632 5 Snow Hill MD SNHLMDSHRS0  242      
410-632 9 Snow Hill MD SNHLMDSHRS0  242      
410-633 A Baltimore MD DNDLMDDNDS0  238      
410-634 A Ridgely MD HLBOMDTKRS0  242      
410-634 1 Ridgely MD HLBOMDTKRS0  242      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 >>

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.