Prefix 909-310 — Chino, CA
909-310 identifies a block of numbers in Chino, CA, within the 909 area code. Every US prefix is tied to exactly one rate center; this one is Chino.
The rate center lies in the Los Angeles-Long Beach-Anaheim, 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 — 909-310 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 ONVOY, LLC - CA (OCN 649C) as the code holder, assigned May 11, 2016. Because 909-310 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 |
|---|---|---|
| 909-307 | Redlands | FRONTIER CALIFORNIA INC. |
| 909-308 | Chino | PEERLESS NETWORK OF CALIFORNIA, LLC - CA |
| 909-309 | Ontario | SPOK, INC. |
| 909-312 | Redlands | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 909-313 | Chino | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 909-314 | San Bernardino | T-MOBILE USA, INC. |
FAQ
Where is 909-310 located?
The prefix is assigned to the Chino rate center in CA, area code 909. It is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area.
Which company owns 909-310 numbers?
ONVOY, 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 909-310 safe to answer?
The prefix itself says nothing about the caller. Legitimate Chino businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.