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
831-587 9 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2021-10-24   
831-600 5 Santa Cruz CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-01-26   
831-600 6 Santa Cruz CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-02-09   
831-666 2 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2017-09-09   
831-666 5 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2021-04-01   
831-666 7 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-08-09   
831-684 3 Aptos CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-09   
831-684 5 Aptos CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-09   
831-684 6 Aptos CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-09   
831-689 3 Aptos CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-09   
831-689 4 Aptos CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-09   
831-689 6 Aptos CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-09   
831-707 4 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-02-23   
831-726 6 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-12-01   
831-840 A Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 0 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 1 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 2 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 3 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 4 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 5 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 6 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-840 7 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-06-11   
831-840 8 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-09-21   
831-840 9 Watsonville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-08-18   
925-962 7 Lafayette CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-03-12   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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