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: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-935 0 Edinburg TX HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-01-23   
956-935 1 Edinburg TX HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-01-23   
956-935 2 Edinburg TX HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-12-12   
956-935 3 Edinburg TX HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-12-12   
956-935 4 Edinburg TX HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-12-12   
956-935 5 Edinburg TX   4290 STPCS JOINT VENTURE, LLC 568   2025-01-24   
956-935 6 Edinburg TX   4290 STPCS JOINT VENTURE, LLC 568   2025-01-24   
956-935 7 Edinburg TX   4290 STPCS JOINT VENTURE, LLC 568   2025-01-24   
956-935 8 Edinburg TX   4290 STPCS JOINT VENTURE, LLC 568   2025-01-24   
956-935 9 Edinburg TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2025-01-24   
956-936 A Falcon TX ZPTATXXADS0  2073 BORDER TO BORDER COMMUNICATIONS 568      
956-937 A Laredo TX SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 566      
956-937 0 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-08-23   
956-937 1 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-08-23   
956-937 2 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-08-23   
956-937 3 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-08-23   
956-937 4 Laredo TX SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 566   2021-06-03   
956-937 5 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-09-24   
956-937 6 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-09-24   
956-937 7 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-09-24   
956-937 8 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-09-24   
956-937 9 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2021-09-24   
956-942 A Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 0 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 1 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 2 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 3 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 4 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 5 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 6 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 7 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 8 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-942 9 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-03-23   
956-943 A Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 0 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 1 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 2 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 3 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 4 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 5 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 6 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 7 Port Isabel TX PTISTXPIRS0  9533 SOUTHWESTERN BELL 568      
956-943 8 Port Isabel TX   515J IP HORIZON LLC 568   2025-05-04   
956-943 9 Port Isabel TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2012-11-24   
956-944 A Port Mansfield TX PTMNTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-946 A Mission TX HRLNTXHGXNX  965H FRACTEL, LLC 568      
956-946 0 Mission TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2022-01-01   
956-946 1 Mission TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-13   
956-946 2 Mission TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-13   
956-946 3 Mission TX HRLNTXHGXNX  965H FRACTEL, LLC 568   2020-08-16   

<< 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 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.