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: 693

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-693 A Lancaster CA   649C ONVOY, LLC - CA 730   2026-10-25   
661-693 0 Lancaster CA   649C ONVOY, LLC - CA 730   2026-10-25   
661-693 8 Lancaster CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-10-26   
661-693 9 Lancaster CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-11-16   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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