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: 445

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-445 A Lancaster CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
661-445 0 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 1 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 2 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 3 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 4 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 5 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 6 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 7 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 8 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   
661-445 9 Lancaster CA   6529 T-MOBILE USA, INC. 730   2014-11-28   

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

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