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: 281 [Rate centres in NPA 281] [Dial plan for NPA 281]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-498 8 Houston Suburban TX HSTNTXALDS0  9533 SOUTHWESTERN BELL 560      
281-498 9 Houston Suburban TX HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2021-10-25   
281-499 A Stafford TX STFRTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      
281-500 A Langham Creek TX HSTQTX02DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 560      
281-500 0 Langham Creek TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2017-10-30   
281-500 1 Langham Creek TX HSTQTX02DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 560      
281-500 2 Langham Creek TX HSTQTX02DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 560      
281-500 3 Langham Creek TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2017-10-30   
281-500 4 Langham Creek TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
281-500 5 Langham Creek TX HSTQTX02DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 560      
281-500 6 Langham Creek TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
281-500 7 Langham Creek TX HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2002-12-01   
281-500 8 Langham Creek TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2003-10-01   
281-500 9 Langham Creek TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2005-12-12   
281-501 A Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
281-501 0 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 1 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 2 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 3 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 4 Houston TX HSTOTX42DS0  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2007-07-31   
281-501 5 Houston TX HSTOTX42DS0  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2007-07-31   
281-501 6 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2007-08-10   
281-501 7 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2007-08-10   
281-501 8 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-10-15   
281-501 9 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2007-08-26   
281-502 A Highlands TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-502 0 Highlands TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2017-04-26   
281-502 1 Highlands TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-502 2 Highlands TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2018-04-14   
281-502 3 Highlands TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2014-09-04   
281-502 4 Highlands TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2019-10-30   
281-502 5 Highlands TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2018-11-26   
281-502 6 Highlands TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2018-11-26   
281-502 7 Highlands TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560   2015-05-21   
281-502 8 Highlands TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2018-03-31   
281-502 9 Highlands TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-503 A Porter Heights TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-503 0 Porter Heights TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-503 1 Porter Heights TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-02-14   
281-503 2 Porter Heights TX NCGDTXNCKMD  318C CEBRIDGE TELECOM TX , L.P. - TX 560   2014-02-28   
281-503 3 Porter Heights TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-503 4 Porter Heights TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-08-31   
281-503 5 Porter Heights TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2017-05-28   
281-503 6 Porter Heights TX HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2014-06-23   
281-503 7 Porter Heights TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2011-11-18   
281-503 8 Porter Heights TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2018-05-27   
281-503 9 Porter Heights TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2019-05-05   
281-504 A Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-504 0 Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-504 1 Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      

<< 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 >>

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.