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.

NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

<< 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 82 83 84 85 86 87 88 89 90 91 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-897 3 Annapolis MD PARLMDPADS0  9212 VERIZON MARYLAND, INC. 238      
410-897 4 Annapolis MD PARLMDPADS0  9212 VERIZON MARYLAND, INC. 238      
410-897 5 Annapolis MD PARLMDPADS0  9212 VERIZON MARYLAND, INC. 238      
410-897 6 Annapolis MD PARLMDPADS0  9212 VERIZON MARYLAND, INC. 238      
410-897 7 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-07-02   
410-897 8 Annapolis MD PARLMDPADS0  9212 VERIZON MARYLAND, INC. 238      
410-897 9 Annapolis MD PARLMDPADS0  9212 VERIZON MARYLAND, INC. 238      
410-898 A Waterloo (Washington DC LATA) MD MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-899 A Towson MD HNVAMDAE3MD  6630 USA MOBILITY WIRELESS, INC. 238      
410-900 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
410-900 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-02-25   
410-900 1 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-12-09   
410-900 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-02-25   
410-900 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-06-06   
410-900 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-01-19   
410-900 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-01-19   
410-900 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-01-21   
410-900 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-01-21   
410-900 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-07-16   
410-900 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-01-01   
410-901 A Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 0 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 1 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 2 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 3 Cambridge MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2015-08-12   
410-901 4 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 5 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 6 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 7 Cambridge MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2005-02-17   
410-901 8 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-901 9 Cambridge MD CMBRMDCMDS0  9212 VERIZON MARYLAND, INC. 242      
410-902 A Pikesville MD OWMLMDOMDS0  9212 VERIZON MARYLAND, INC. 238      
410-903 A Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 0 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 1 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 2 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 3 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 4 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 5 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 6 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 7 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 8 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-903 9 Severna Park MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
410-904 A Waterloo MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-904 0 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
410-904 1 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
410-904 2 Waterloo MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-904 3 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-904 5 Waterloo MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-03-18   
410-904 6 Waterloo MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-05-21   

<< 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 82 83 84 85 86 87 88 89 90 91 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.