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: 515J IP HORIZON LLC

<< 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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-461 7 Parkville MD   238   2016-10-14   
443-530 2 Dundalk MD   238   2016-10-14   
443-532 9 Prince Frederick MD   238   2016-01-04   
443-541 6 Cockeysville MD   238   2016-10-14   
443-576 8 Randallstown MD   238   2016-01-04   
443-578 9 Cockeysville MD   238   2015-03-23   
443-584 8 Crofton MD   238   2016-10-14   
443-584 9 Crofton MD   238   2015-03-21   
443-592 8 Elkridge MD   238   2019-04-26   
443-593 0 Elkton MD   238   2016-01-04   
443-593 6 Elkton MD   238   2015-03-23   
443-594 9 Sparrows Point MD   238   2016-10-14   
443-606 9 Fork MD   238   2015-03-21   
443-607 9 West River MD   238   2016-01-04   
443-626 6 Chase MD   238   2015-03-21   
443-648 8 Essex MD   238   2013-09-06   
443-649 8 Sparrows Point MD   238   2016-01-04   
443-650 2 Reisterstown MD   238   2016-10-14   
443-652 9 Towson MD   238   2016-10-14   
443-657 1 Randallstown MD   238   2016-10-14   
443-660 0 Pikesville MD   238   2013-09-06   
443-661 2 Waterloo MD   238   2017-07-07   
443-663 9 Woodlawn MD   238   2016-05-31   
443-685 7 Severn MD   238   2016-10-14   
443-702 9 Armiger-Gibson Island MD BLTMMDCHXHX  238   2021-08-15   
443-707 1 Aberdeen MD   236   2014-08-08   
443-733 8 Waterloo MD   238   2016-05-31   
443-734 0 Severn MD   238   2013-09-06   
443-737 8 Waterloo MD   238   2015-03-21   
443-753 8 Waterloo (Washington DC LATA) MD   236   2016-05-31   
443-775 8 Annapolis MD   238   2016-05-31   
443-776 9 Elkridge MD   238   2015-03-23   
443-784 0 Armiger-Gibson Island MD   238   2013-09-06   
443-792 1 Brooklyn Park-Linthicum MD   238   2015-03-23   
443-792 6 Brooklyn Park-Linthicum MD   238   2016-01-04   
443-828 2 Ellicott City MD   238   2013-09-06   
443-881 1 Reisterstown MD   238   2015-03-23   
443-906 8 Severna Park MD   238   2016-05-31   
443-906 9 Severna Park MD   238   2015-03-21   
443-910 9 Bel Air MD   238   2013-09-06   
443-917 0 Columbia MD   238   2013-09-06   
443-943 8 Sparrows Point MD   238   2015-03-23   
445-212 A Philadelphia Zone 1 PA PHLAPAFGX3Y  228      
445-212 1 Philadelphia Zone 1 PA   228   2020-11-06   
445-600 8 Philadelphia Suburban Zone 39 PA   228   2018-12-10   
445-600 9 Philadelphia Suburban Zone 39 PA   228   2018-12-10   
447-201 A Champaign-Urbana IL CHMPILCPXFY  370      
447-201 1 Champaign-Urbana IL CHMPILCPXFY  370   2021-04-24   
447-202 A Springfield IL SPFDILESX1Y  374      
447-202 1 Springfield IL   374   2021-04-24   

<< 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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.