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.
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Switch: AUSWTXGX3MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-787 6 San Marcos TX 6529 T-MOBILE USA, INC. 558      
512-787 7 San Marcos TX 6529 T-MOBILE USA, INC. 558      
512-787 8 San Marcos TX 6529 T-MOBILE USA, INC. 558      
512-787 9 San Marcos TX 6529 T-MOBILE USA, INC. 558      
512-938 9 San Marcos TX 6529 T-MOBILE USA, INC. 558   2008-05-25   
737-213 0 San Marcos TX 6529 T-MOBILE USA, INC. 558   2018-04-15   
737-213 2 San Marcos TX 6529 T-MOBILE USA, INC. 558   2016-02-27   
737-213 3 San Marcos TX 6529 T-MOBILE USA, INC. 558   2016-02-27   
737-213 7 San Marcos TX 6529 T-MOBILE USA, INC. 558   2017-05-24   
737-213 8 San Marcos TX 6529 T-MOBILE USA, INC. 558   2017-05-24   
737-221 A San Marcos TX 6529 T-MOBILE USA, INC. 558      
737-221 7 San Marcos TX 6529 T-MOBILE USA, INC. 558   2018-04-04   
737-221 9 San Marcos TX 6529 T-MOBILE USA, INC. 558   2017-09-18   
737-315 0 San Marcos TX 6529 T-MOBILE USA, INC. 558   2022-10-06   
737-315 1 San Marcos TX 6529 T-MOBILE USA, INC. 558   2022-10-06   
737-335 A San Marcos TX 6529 T-MOBILE USA, INC. 558      
737-335 9 San Marcos TX 6529 T-MOBILE USA, INC. 558   2022-11-11   
737-344 2 San Marcos TX 6529 T-MOBILE USA, INC. 558   2021-09-13   
737-344 6 San Marcos TX 6529 T-MOBILE USA, INC. 558   2021-09-13   
737-422 4 San Marcos TX 5562 METROPCS, INC. 558   2026-07-10   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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