Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 341 [Rate centres in NPA 341] [Dial plan for NPA 341]

NXX: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
341-223 A Oakland: Alameda DA CA SNJUCACL4MD  939H COMMIO, LLC 722      
341-223 0 Oakland: Alameda DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-01-02   
341-223 1 Oakland: Alameda DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-01-02   
341-223 2 Oakland: Alameda DA CA SNJUCACL4MD  939H COMMIO, LLC 722   2023-01-02   
341-223 3 Oakland: Alameda DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-01-03   
341-223 4 Oakland: Alameda DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-01-03   
341-223 5 Oakland: Alameda DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-01-03   
341-223 6 Oakland: Alameda DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-06-27   
341-223 7 Oakland: Alameda DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-02-04   
341-223 8 Oakland: Alameda DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-02-04   
341-223 9 Oakland: Alameda DA CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2023-01-03   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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