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
410-401 7 Brooklyn Park-Linthicum MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-401 8 Brooklyn Park-Linthicum MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
410-401 9 Brooklyn Park-Linthicum MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 A Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 0 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 1 Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 2 Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 3 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 4 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-05   
410-402 5 Catonsville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-29   
410-402 6 Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 7 Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 8 Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-402 9 Catonsville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-403 A Cockeysville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-403 0 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
410-403 1 Cockeysville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-403 2 Cockeysville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-403 3 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-09   
410-403 4 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
410-403 5 Cockeysville MD   876D ONVOY, LLC - MD 238   2024-04-26   
410-403 6 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-09-08   
410-403 7 Cockeysville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-19   
410-403 8 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-08-13   
410-403 9 Cockeysville MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-404 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-405 A Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 0 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 1 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 2 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 3 Fork MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-405 4 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 5 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 6 Fork MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-405 7 Fork MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-02-27   
410-405 8 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-405 9 Fork MD FORKMDFKRS1  9212 VERIZON MARYLAND, INC. 238      
410-406 A Essex MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-406 0 Essex MD BLTMMDCH08Z  4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-406 1 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-08   
410-406 2 Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-19   
410-406 3 Essex MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-406 4 Essex MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
410-406 5 Essex MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-406 6 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2017-06-02   
410-406 7 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2004-11-27   
410-406 8 Essex MD BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 238   2004-03-27   
410-406 9 Essex MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-407 A Elkridge MD EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238      
410-408 A Towson MD HNVAMDAE3MD  6630 USA MOBILITY WIRELESS, 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: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.