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.

Houston, TX

<< 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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
832-470 4   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2011-06-30   
832-470 5   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2011-06-30   
832-470 6   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2011-06-30   
832-470 7   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2011-06-30   
832-470 8   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2011-06-30   
832-470 9   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2011-06-30   
832-472 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-472 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-26   
832-472 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-25   
832-474 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-474 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-474 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-05-09   
832-474 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-05-09   
832-475 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-475 0   6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-07   
832-475 1   6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-07   
832-475 2   6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-07   
832-475 3   6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-07   
832-475 4   6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-07   
832-475 5   6701 AERIAL COMMUNICATIONS, INC. 560   2007-07-01   
832-475 6   6701 AERIAL COMMUNICATIONS, INC. 560   2007-07-01   
832-475 7   6701 AERIAL COMMUNICATIONS, INC. 560   2007-07-01   
832-475 8   6701 AERIAL COMMUNICATIONS, INC. 560   2007-07-01   
832-475 9   6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-07   
832-476 A HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
832-477 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-477 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-14   
832-477 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-10-24   
832-483 A HSTDTXBGBMD  5562 METROPCS, INC. 560      
832-483 0   5562 METROPCS, INC. 560      
832-483 1   5562 METROPCS, INC. 560      
832-483 2   5562 METROPCS, INC. 560      
832-483 3   5562 METROPCS, INC. 560      
832-483 4   5562 METROPCS, INC. 560      
832-483 5   5562 METROPCS, INC. 560      
832-483 6   5562 METROPCS, INC. 560      
832-483 7   5562 METROPCS, INC. 560      
832-483 8   5562 METROPCS, INC. 560      
832-483 9   6701 AERIAL COMMUNICATIONS, INC. 560      
832-485 A   903C ONVOY, LLC - TX 560      
832-485 0   903C ONVOY, LLC - TX 560      
832-485 1   903C ONVOY, LLC - TX 560      
832-485 2   903C ONVOY, LLC - TX 560      
832-485 3   903C ONVOY, LLC - TX 560      
832-485 4   903C ONVOY, LLC - TX 560      
832-485 5   903C ONVOY, LLC - TX 560      
832-485 6   903C ONVOY, LLC - TX 560      
832-485 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-10-20   
832-485 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-10-20   
832-485 9   903C ONVOY, LLC - TX 560      
832-487 A HSTNTXRIDS0  9533 SOUTHWESTERN BELL 560      
832-487 0   903C ONVOY, LLC - TX 560   2010-06-21   
832-487 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 560   2006-02-26   
832-487 2   9533 SOUTHWESTERN BELL 560      
832-487 3   5562 METROPCS, INC. 560   2006-01-04   
832-487 4   5562 METROPCS, INC. 560   2006-01-04   
832-487 5   5562 METROPCS, INC. 560   2006-01-04   
832-487 6   5562 METROPCS, INC. 560   2006-01-04   
832-487 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 560   2006-02-26   
832-487 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 560   2006-02-26   
832-487 9   318J COMCAST IP PHONE, LLC 560   2006-04-18   
832-488 A HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
832-488 0   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 1   9533 SOUTHWESTERN BELL 560      
832-488 2   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 3   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 4   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 5   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 6   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 7   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 8   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-488 9   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-489 A HSTDTXBGBMD  5562 METROPCS, INC. 560      
832-489 0   5562 METROPCS, INC. 560      
832-489 1   5562 METROPCS, INC. 560      
832-489 2   5562 METROPCS, INC. 560      
832-489 3   5562 METROPCS, INC. 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 99 100 101 102 103 104 105 106 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.