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: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 614

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-614 A Tehachapi CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-614 0 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 1 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 2 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 3 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 4 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 5 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 6 Tehachapi CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-614 7 Tehachapi CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2025-02-10   
661-614 8 Tehachapi CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2024-09-22   
661-614 9 Tehachapi CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2023-10-15   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.