Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 909 [Rate centres in NPA 909] [Dial plan for NPA 909]

NXX: 443

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-443 A Ontario CA ONTRCAXPXPY  649C ONVOY, LLC - CA 730      
909-443 0 Ontario CA   899D METROPCS NETWORKS, LLC 730   2014-08-04   
909-443 1 Ontario CA   649C ONVOY, LLC - CA 730   2014-09-20   
909-443 2 Ontario CA   649C ONVOY, LLC - CA 730   2014-09-20   
909-443 3 Ontario CA   649C ONVOY, LLC - CA 730   2023-10-30   
909-443 4 Ontario CA   321J HD CARRIER LLC 730   2014-08-16   
909-443 5 Ontario CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2014-07-14   
909-443 6 Ontario CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2014-10-15   
909-443 7 Ontario CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2014-12-13   
909-443 8 Ontario CA   899D METROPCS NETWORKS, LLC 730   2014-10-23   
909-443 9 Ontario CA   6529 T-MOBILE USA, INC. 730   2014-10-31   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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