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.

Earlimart, CA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
661-849 5   145J TERRA NOVA TELECOM INC. 734   2022-11-03   
661-849 7   145J TERRA NOVA TELECOM INC. 734   2020-11-14   
661-849 8 ERLMCA11RS0  9740 PACIFIC BELL 734      
661-849 9 BKFDCAKTOMD  073H TELNYX LLC 734   2018-07-09   
661-851 A BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-851 0   145J TERRA NOVA TELECOM INC. 734   2026-02-05   
661-851 1 BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-851 3 BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2024-11-30   
661-851 5   776C CHARTER FIBERLINK CA-CCO, LLC - CA 734   2025-12-10   
661-851 6 BKFDCA12X5X  9262 UTILITY TELECOM GROUP, LLC - CA 734      
661-851 7 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2021-05-09   
661-851 8 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2021-05-09   
661-851 9   145J TERRA NOVA TELECOM INC. 734   2023-06-24   

<< 1 2

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.