Prefix 909-343 — Arrowhead, CA
909-343 identifies a block of numbers in Arrowhead, CA, within the 909 area code. Every US prefix is tied to exactly one rate center; this one is Arrowhead.
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 — 909-343 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 T-MOBILE USA, INC., operating company number 6529, assigned September 30, 2011. 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 |
|---|---|---|
| 909-340 | Big Bear Lake | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 909-341 | Rialto | TWC IP ENABLED SERVICES, LLC |
| 909-342 | Chino | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 909-344 | Claremont | T-MOBILE USA, INC. |
| 909-345 | Diamond Bar | BANDWIDTH.COM CLEC, LLC - CA |
| 909-346 | Fontana | METROPCS NETWORKS, LLC |
FAQ
Where is 909-343 located?
The prefix is assigned to the Arrowhead rate center in CA, area code 909. It is part of the Riverside-San Bernardino-Ontario, CA Metropolitan Statistical Area.
Which company owns 909-343 numbers?
T-MOBILE USA, INC. 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 909-343 safe to answer?
The prefix itself says nothing about the caller. Legitimate Arrowhead businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.