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: 539

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-539 A McFarland CA BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734      
661-539 0 McFarland CA   624H ONVOY SPECTRUM, LLC 734   2022-01-12   
661-539 1 McFarland CA   649C ONVOY, LLC - CA 734   2023-07-23   
661-539 2 McFarland CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-539 3 McFarland CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-539 4 McFarland CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-539 5 McFarland CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-539 6 McFarland CA   649C ONVOY, LLC - CA 734   2023-10-30   
661-539 7 McFarland CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2023-04-15   
661-539 8 McFarland CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2022-09-18   
661-539 9 McFarland CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2022-03-20   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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