Local Calling Guide

Area code/prefix search

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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 649

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-649 A Arvin CA BKFDCA12XRX  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 734      
661-649 0 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-04-27   
661-649 1 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-04-27   
661-649 2 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-04-27   
661-649 3 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-09-15   
661-649 4 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-07-21   
661-649 5 Arvin CA BKFDCA12XRX  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 734   2022-08-24   
661-649 6 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-07-21   
661-649 7 Arvin CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2024-07-21   
661-649 8 Arvin CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2024-04-14   
661-649 9 Arvin CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2024-01-15   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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