Prefix 909-259 — Ontario, CA
909-259 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 — 909-259 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.
The assigned code holder is PEERLESS NETWORK OF CALIFORNIA, LLC - CA, operating company number 373F, assigned January 6, 2009. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 909-256 | Upland | TWC IP ENABLED SERVICES, LLC |
| 909-257 | Upland | PACIFIC BELL (COMPETITIVE) |
| 909-258 | Rialto | METROPCS NETWORKS, LLC |
| 909-260 | Ontario | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 909-261 | Ontario | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 909-262 | Ontario | NEW CINGULAR WIRELESS PCS, LLC |
FAQ
Where is 909-259 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 909-259 numbers?
PEERLESS NETWORK OF CALIFORNIA, LLC - 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 909-259 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.