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: 681

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-681 A Bakersfield: North DA CA   478J NUSO, LLC 734   2025-06-12   
661-681 1 Bakersfield: North DA CA   478J NUSO, LLC 734   2025-06-12   
661-681 6 Bakersfield: North DA CA   321J HD CARRIER LLC 734   2026-05-15   
661-681 7 Bakersfield: North DA CA   321J HD CARRIER LLC 734   2026-05-15   
661-681 8 Bakersfield: North DA CA   321J HD CARRIER LLC 734   2026-05-15   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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