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: 533

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-533 A Palmdale: Palmdale DA CA PLDLCA11DS0  9740 PACIFIC BELL 730      
661-533 0 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 1 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 2 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 3 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 4 Palmdale: Palmdale DA CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2012-12-28   
661-533 5 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 6 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 7 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 8 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      
661-533 9 Palmdale: Palmdale DA CA   9740 PACIFIC BELL 730      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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