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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-301 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-301 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-20   
410-302 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-303 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-304 A Queenstown MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242      
410-304 0 Queenstown MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
410-304 1 Queenstown MD   145J TERRA NOVA TELECOM INC. 242   2024-02-14   
410-304 2 Queenstown MD ESTNMDESMMD  228C IDT AMERICA, CORP. - MD 242   2006-05-20   
410-304 3 Queenstown MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2009-03-01   
410-304 4 Queenstown MD SLBRMDSBX6Y  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 242   2011-01-29   
410-304 5 Queenstown MD SLBRMDSB8MD  2589 US LEC OF MARYLAND, INC. 242   2012-07-26   
410-304 6 Queenstown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2018-05-27   
410-304 7 Queenstown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
410-305 A Odenton MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
410-305 0 Odenton MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
410-305 1 Odenton MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
410-305 2 Odenton MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
410-305 3 Odenton MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
410-305 4 Odenton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-07-27   
410-305 5 Odenton MD ODTNMDONDS0  9212 VERIZON MARYLAND, INC. 238      
410-305 6 Odenton MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-305 7 Odenton MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2009-10-09   
410-305 8 Odenton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-12-17   
410-305 9 Odenton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-01-02   
410-306 A Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 0 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 1 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 2 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 3 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 4 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 5 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-05-20   
410-306 6 Aberdeen MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 236   2005-03-10   
410-306 7 Aberdeen MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 236   2005-03-11   
410-306 8 Aberdeen MD ABRDMDABDS0  9212 VERIZON MARYLAND, INC. 236      
410-306 9 Aberdeen MD BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 236   2003-02-25   
410-307 A Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-307 0 Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-10-14   
410-307 1 Towson MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-307 2 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-307 3 Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-12-09   
410-307 4 Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-12-09   
410-307 5 Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      

<< 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 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.