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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-201 4 McAllen TX 903C ONVOY, LLC - TX 568   2024-05-04   
956-201 6 McAllen TX 903C ONVOY, LLC - TX 568   2024-02-24   
956-201 7 McAllen TX 903C ONVOY, LLC - TX 568   2024-02-24   
956-201 8 McAllen TX 903C ONVOY, LLC - TX 568   2024-02-24   
956-201 9 McAllen TX 903C ONVOY, LLC - TX 568   2024-02-24   
956-217 2 McAllen TX 903C ONVOY, LLC - TX 568   2025-01-06   
956-247 0 San Benito TX 903C ONVOY, LLC - TX 568   2024-05-04   
956-247 4 San Benito TX 903C ONVOY, LLC - TX 568   2017-05-03   
956-253 A Zapata TX 903C ONVOY, LLC - TX 568      
956-265 3 Zapata TX 903C ONVOY, LLC - TX 568   2017-05-19   
956-275 A Harlingen TX 903C ONVOY, LLC - TX 568      
956-275 0 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 1 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 2 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 3 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 4 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 5 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 6 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 7 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-275 8 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-07   
956-275 9 Harlingen TX 903C ONVOY, LLC - TX 568   2017-05-08   
956-276 1 San Benito TX 903C ONVOY, LLC - TX 568   2021-02-03   
956-276 6 San Benito TX 903C ONVOY, LLC - TX 568   2021-02-03   
956-276 8 San Benito TX 903C ONVOY, LLC - TX 568   2024-02-29   
956-277 9 La Feria TX 903C ONVOY, LLC - TX 568   2017-05-02   
956-297 0 Roma TX 903C ONVOY, LLC - TX 568   2017-06-06   
956-297 3 Roma TX 903C ONVOY, LLC - TX 568   2020-08-24   
956-297 4 Roma TX 903C ONVOY, LLC - TX 568   2020-08-24   
956-297 6 Roma TX 903C ONVOY, LLC - TX 568   2024-07-08   
956-300 A Harlingen TX 903C ONVOY, LLC - TX 568      
956-302 A Zapata TX 903C ONVOY, LLC - TX 568      
956-303 A Los Fresnos TX 903C ONVOY, LLC - TX 568      
956-304 A Raymondville TX 903C ONVOY, LLC - TX 568      
956-305 A Edinburg TX 903C ONVOY, LLC - TX 568      
956-306 A Edcouch TX 903C ONVOY, LLC - TX 568      
956-338 4 Brownsville TX 903C ONVOY, LLC - TX 568   2019-02-18   
956-338 5 Brownsville TX 903C ONVOY, LLC - TX 568   2019-02-18   
956-348 0 Edinburg TX 903C ONVOY, LLC - TX 568   2017-05-03   
956-363 4 Weslaco TX 903C ONVOY, LLC - TX 568   2020-07-07   
956-368 A Harlingen TX 903C ONVOY, LLC - TX 568      
956-368 1 Harlingen TX 903C ONVOY, LLC - TX 568   2020-01-27   
956-368 2 Harlingen TX 903C ONVOY, LLC - TX 568   2020-01-27   
956-368 7 Harlingen TX 903C ONVOY, LLC - TX 568   2020-01-27   
956-368 8 Harlingen TX 903C ONVOY, LLC - TX 568   2019-04-08   
956-368 9 Harlingen TX 903C ONVOY, LLC - TX 568   2019-04-08   
956-370 1 Rio Grande City TX 903C ONVOY, LLC - TX 568   2017-05-03   
956-374 2 Los Fresnos TX 903C ONVOY, LLC - TX 568   2017-06-02   
956-382 5 Brownsville TX 903C ONVOY, LLC - TX 568   2020-01-13   
956-382 6 Brownsville TX 903C ONVOY, LLC - TX 568   2020-01-13   
956-382 7 Brownsville TX 903C ONVOY, LLC - TX 568   2020-01-13   

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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