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: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-274 A Arrowhead CA   649C ONVOY, LLC - CA 730   2025-05-04   
840-274 0 Arrowhead CA   649C ONVOY, LLC - CA 730   2025-05-04   
840-274 5 Arrowhead CA   6529 T-MOBILE USA, INC. 730   2025-06-14   
840-274 6 Arrowhead CA   6529 T-MOBILE USA, INC. 730   2025-06-14   
840-274 7 Arrowhead CA   6529 T-MOBILE USA, INC. 730   2025-06-14   
840-274 8 Arrowhead CA   6529 T-MOBILE USA, INC. 730   2025-06-14   
840-274 9 Arrowhead CA   6529 T-MOBILE USA, INC. 730   2025-06-14   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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