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: 291

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-291 A San Bernardino CA   649C ONVOY, LLC - CA 730   2026-09-18   
840-291 0 San Bernardino CA   649C ONVOY, LLC - CA 730   2026-09-18   
840-291 1 San Bernardino CA   649C ONVOY, LLC - CA 730   2026-09-18   
840-291 2 San Bernardino CA   649C ONVOY, LLC - CA 730   2026-09-18   
840-291 3 San Bernardino CA   649C ONVOY, LLC - CA 730   2026-09-18   
840-291 4 San Bernardino CA   649C ONVOY, LLC - CA 730   2026-09-18   
840-291 5 San Bernardino CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2026-09-21   
840-291 6 San Bernardino CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2026-09-21   
840-291 7 San Bernardino CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2026-09-21   
840-291 8 San Bernardino CA   624H ONVOY SPECTRUM, LLC 730   2026-09-21   
840-291 9 San Bernardino CA   624H ONVOY SPECTRUM, LLC 730   2026-09-21   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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