Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 691

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-691 A Bakersfield: Main DA CA BKFDCA11XMX  252F WIDE VOICE, LLC - CA 734   2025-12-26   
661-691 0 Bakersfield: Main DA CA   649C ONVOY, LLC - CA 734   2026-08-23   
661-691 1 Bakersfield: Main DA CA BKFDCA11XMX  252F WIDE VOICE, LLC - CA 734   2025-12-26   
661-691 2 Bakersfield: Main DA CA BKFDCA11XMX  252F WIDE VOICE, LLC - CA 734   2025-12-26   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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