Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-257 A Colton CA   6529 T-MOBILE USA, INC. 730   2024-06-01   
840-257 0 Colton CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-06-02   
840-257 1 Colton CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-06-02   
840-257 2 Colton CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-07-11   
840-257 3 Colton CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-08-11   
840-257 4 Colton CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-09-10   
840-257 8 Colton CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-06-11   
840-257 9 Colton CA   6529 T-MOBILE USA, INC. 730   2024-06-01   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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