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: 903C ONVOY, LLC - 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
737-300 0 Austin TX   558   2015-05-25   
737-300 3 Austin TX   558   2015-05-25   
737-300 6 Austin TX   558   2015-05-25   
737-300 8 Austin TX   558   2015-06-12   
737-300 9 Austin TX   558   2015-05-25   
737-301 0 Austin TX   558   2024-11-12   
737-301 4 Austin TX   558   2021-11-16   
737-301 5 Austin TX   558   2021-11-16   
737-301 6 Austin TX   558   2021-11-16   
737-302 2 Smithville TX   558   2016-07-29   
737-302 4 Smithville TX   558   2020-08-16   
737-302 5 Smithville TX   558   2020-08-16   
737-302 6 Smithville TX   558   2020-08-16   
737-303 4 San Marcos TX   558   2021-12-24   
737-303 5 San Marcos TX   558   2021-12-24   
737-306 1 Hutto TX   558   2024-04-05   
737-306 2 Hutto TX   558   2024-05-11   
737-306 3 Hutto TX   558   2025-07-19   
737-307 A Bertram TX AUSTTXGR03Z  558      
737-307 1 Bertram TX   558   2021-04-30   
737-307 2 Bertram TX   558   2021-09-26   
737-307 4 Bertram TX   558   2021-10-28   
737-307 7 Bertram TX   558   2021-03-14   
737-307 8 Bertram TX   558   2021-03-14   
737-309 0 Austin TX   558   2022-01-01   
737-309 2 Austin TX   558   2022-01-08   
737-309 3 Austin TX   558   2022-01-08   
737-309 4 Austin TX   558   2022-02-03   
737-309 5 Austin TX   558   2022-02-03   
737-310 3 Wimberley TX   558   2022-01-01   
737-310 4 Wimberley TX   558   2022-01-01   
737-310 6 Wimberley TX   558   2023-04-06   
737-312 A Kyle TX AUSTTXGR03Z  558      
737-312 2 Kyle TX   558   2022-01-01   
737-312 3 Kyle TX   558   2022-01-01   
737-312 4 Kyle TX   558   2022-01-01   
737-312 5 Kyle TX   558   2022-01-09   
737-312 6 Kyle TX   558   2022-01-09   
737-313 0 Austin TX   558   2022-02-28   
737-313 1 Austin TX   558   2022-02-28   
737-313 4 Austin TX   558   2022-12-13   
737-313 5 Austin TX   558   2022-12-13   
737-315 3 San Marcos TX   558   2022-04-02   
737-315 4 San Marcos TX   558   2022-04-02   
737-315 5 San Marcos TX   558   2022-04-02   
737-315 8 San Marcos TX   558   2024-05-04   
737-316 A Wimberley TX AUSTTXGR03Z  558      
737-316 0 Wimberley TX   558   2024-04-12   
737-316 1 Wimberley TX   558   2024-05-11   
737-316 2 Wimberley TX   558   2023-09-30   
737-316 3 Wimberley TX   558   2024-03-14   
737-316 4 Wimberley TX   558   2025-07-20   
737-316 5 Wimberley TX   558   2025-09-27   
737-316 6 Wimberley TX   558   2025-01-09   
737-316 7 Wimberley TX   558   2024-12-01   
737-316 8 Wimberley TX   558   2024-07-01   
737-317 A Dripping Springs TX AUSTTXGR03Z  558      
737-317 2 Dripping Springs TX   558   2021-03-14   
737-317 3 Dripping Springs TX   558   2022-12-15   
737-317 4 Dripping Springs TX   558   2021-03-14   
737-317 7 Dripping Springs TX   558   2021-04-30   
737-317 8 Dripping Springs TX   558   2021-04-30   
737-320 3 Austin TX   558   2022-05-01   
737-321 1 Elgin TX   558   2024-04-04   
737-321 4 Elgin TX   558   2023-08-12   
737-321 5 Elgin TX   558   2023-08-12   
737-321 6 Elgin TX   558   2023-08-12   
737-321 7 Elgin TX   558   2023-08-12   
737-321 8 Elgin TX   558   2023-08-12   
737-324 6 Leander TX   558   2022-12-15   
737-324 7 Leander TX   558   2022-12-15   
737-325 A Austin TX AUSTTXGR03Z  558      
737-325 0 Austin TX   558   2023-11-18   
737-325 1 Austin TX   558   2023-11-18   
737-325 2 Austin TX   558   2023-11-17   
737-325 3 Austin TX   558   2023-11-17   
737-325 8 Austin TX   558   2023-11-18   
737-327 A Hutto TX AUSTTXGR03Z  558      
737-327 3 Hutto TX   558   2023-08-26   
737-327 4 Hutto TX   558   2021-04-30   
737-327 5 Hutto TX   558   2021-04-30   
737-327 7 Hutto TX   558   2021-03-14   
737-327 8 Hutto TX   558   2021-03-14   
737-331 1 Dale/Lytton Springs TX   558   2022-12-21   
737-332 A Burnet TX AUSTTXGR03Z  558      
737-332 2 Burnet TX   558   2021-03-14   
737-332 3 Burnet TX   558   2020-12-26   
737-332 4 Burnet TX   558   2021-03-14   
737-332 5 Burnet TX   558   2021-04-30   
737-332 6 Burnet TX   558   2021-04-30   
737-335 0 San Marcos TX   558   2024-05-04   
737-337 A Fentress TX SMRCTXXAYMD  558      
737-337 4 Fentress TX   558   2021-03-14   
737-337 5 Fentress TX   558   2021-03-14   
737-337 8 Fentress TX   558   2021-04-30   
737-338 A Elgin TX AUSTTXGR03Z  558      
737-338 3 Elgin TX   558   2024-03-02   
737-338 7 Elgin TX   558   2021-01-23   
737-338 8 Elgin TX   558   2021-01-23   
737-339 3 Taylor TX   558   2025-10-26   

<< 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 >>

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.