Prefix 909-354 — Ontario, CA
909-354 identifies a block of numbers in Ontario, CA, within the 909 area code. Every US prefix is tied to exactly one rate center; this one is Ontario.
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 — 909-354 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (OCN 6006) as the code holder, assigned January 17, 2005. Because 909-354 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 |
|---|---|---|
| 909-351 | Mentone | BANDWIDTH.COM CLEC, LLC - CA |
| 909-352 | Marshall | BANDWIDTH.COM CLEC, LLC - CA |
| 909-353 | Redlands | BANDWIDTH.COM CLEC, LLC - CA |
| 909-355 | Fontana | PACIFIC BELL |
| 909-356 | Fontana | PACIFIC BELL |
| 909-357 | Fontana | PACIFIC BELL |
FAQ
Where is 909-354 located?
The prefix is assigned to the Ontario rate center in CA, area code 909. It is part of the Riverside-San Bernardino-Ontario, CA Metropolitan Statistical Area.
Which company owns 909-354 numbers?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 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 909-354 safe to answer?
The prefix itself says nothing about the caller. Legitimate Ontario businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.