Prefix 909-233 — Rialto, CA
909-233 identifies a block of numbers in Rialto, CA, within the 909 area code. Every US prefix is tied to exactly one rate center; this one is Rialto.
The rate center lies in the Riverside-San Bernardino-Ontario, CA Metropolitan Statistical Area. The serving LATA is 730. Local time follows the Pacific zone.
Treat the on-screen number as a hint, not evidence — 909-233 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
NANPA's central-office code records list METROPCS NETWORKS, LLC (OCN 899D) as the code holder, assigned March 20, 2007. Because 909-233 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 909-230 | Ontario | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
| 909-231 | Fontana | METROPCS NETWORKS, LLC |
| 909-232 | Fontana | METROPCS NETWORKS, LLC |
| 909-234 | Ontario | NEW CINGULAR WIRELESS PCS, LLC |
| 909-235 | Ontario | METROPCS NETWORKS, LLC |
| 909-236 | Pomona | METROPCS NETWORKS, LLC |
FAQ
Where is 909-233 located?
The prefix is assigned to the Rialto rate center in CA, area code 909. It is part of the Riverside-San Bernardino-Ontario, CA Metropolitan Statistical Area.
Which company owns 909-233 numbers?
METROPCS NETWORKS, LLC holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 909-233 safe to answer?
The prefix itself says nothing about the caller. Legitimate Rialto businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.