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.

NPA: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 348

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-348 A Watsonville CA SNJUCACL7MD  965H FRACTEL, LLC 722      
831-348 0 Watsonville CA WTVLCADV0MD  776C CHARTER FIBERLINK CA-CCO, LLC - CA 722   2020-06-21   
831-348 1 Watsonville CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-03-22   
831-348 2 Watsonville CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2020-11-20   
831-348 4 Watsonville CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-09-20   
831-348 5 Watsonville CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2020-08-01   
831-348 6 Watsonville CA SNJUCACL7MD  965H FRACTEL, LLC 722   2019-05-14   
831-348 7 Watsonville CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2020-06-25   
831-348 8 Watsonville CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2020-05-18   
831-348 9 Watsonville CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-09-13   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.