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]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-999 4 Upland CA LSANCAJW7MD  939H COMMIO, LLC 730   2021-10-15   
840-999 5 Upland CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-03-29   
840-999 6 Upland CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-03-29   
840-999 7 Upland CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-03-29   
840-999 8 Upland CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-03-29   
840-999 9 Upland CA   145J TERRA NOVA TELECOM INC. 730   2021-02-23   

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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