Local Calling Guide

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

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-837 A Pomona CA LSANCAJWJMD  516J TON80 COMMUNICATIONS, LLC 730      
840-877 A Marshall CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-888 A Redlands CA LSANCAJWHMD  145J TERRA NOVA TELECOM INC. 730      
840-899 A Highland CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-900 A Rialto CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-977 A Claremont-San Dimas CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-999 A Upland CA LSANCAJWHMD  145J TERRA NOVA TELECOM INC. 730      

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

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