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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-535 A Pleasanton CA 5562 METROPCS, INC. 722      
925-538 A Antioch CA 6529 T-MOBILE USA, INC. 722   2024-03-11   
925-539 A Antioch CA 6529 T-MOBILE USA, INC. 722   2024-08-25   
925-565 A Antioch CA 5562 METROPCS, INC. 722      
925-567 A Clayton CA 6529 T-MOBILE USA, INC. 722      
925-570 A Dublin-San Ramon CA 6529 T-MOBILE USA, INC. 722      
925-575 A Danville CA 5562 METROPCS, INC. 722      
925-577 A Dublin-San Ramon CA 6529 T-MOBILE USA, INC. 722      
925-580 A Pleasanton CA 6529 T-MOBILE USA, INC. 722      
925-584 A Antioch CA 6529 T-MOBILE USA, INC. 722      
925-594 A Danville CA 5562 METROPCS, INC. 722      
925-595 A Concord CA 5562 METROPCS, INC. 722      
925-623 A Pleasanton CA 6529 T-MOBILE USA, INC. 722      
925-639 A Walnut Creek CA 6529 T-MOBILE USA, INC. 722      
925-695 A Concord CA 5562 METROPCS, INC. 722      
925-705 A Walnut Creek CA 5562 METROPCS, INC. 722      
925-727 A Antioch CA 5562 METROPCS, INC. 722      
925-765 A Walnut Creek CA 5562 METROPCS, INC. 722      
925-766 A Walnut Creek CA 6529 T-MOBILE USA, INC. 722      
925-812 A Martinez CA 5562 METROPCS, INC. 722      
925-864 A Concord CA 5562 METROPCS, INC. 722      
925-878 A Lafayette CA 6529 T-MOBILE USA, INC. 722      
925-895 A Dublin-San Ramon CA 5562 METROPCS, INC. 722      
925-897 A Dublin-San Ramon CA 6529 T-MOBILE USA, INC. 722      
925-913 A Bishop Ranch CA 6529 T-MOBILE USA, INC. 722      
925-914 A Clayton CA 6529 T-MOBILE USA, INC. 722      
925-915 A Danville CA 6529 T-MOBILE USA, INC. 722      
925-917 A Martinez CA 6529 T-MOBILE USA, INC. 722      
925-922 A Pleasanton CA 6529 T-MOBILE USA, INC. 722      
925-984 A Danville CA 5562 METROPCS, INC. 722      

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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