Prefix 909-344 — Claremont, CA
The 909-344 prefix belongs to area code 909 and is anchored to the Claremont rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Claremont is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area. For routing purposes it sits in LATA 730. Numbers here keep Pacific time.
The assigned code holder is T-MOBILE USA, INC., operating company number 6529, assigned October 2, 2012. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
Caller ID showing 909-344 is not proof the call came from Claremont: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 909-341 | Rialto | TWC IP ENABLED SERVICES, LLC |
| 909-342 | Chino | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 909-343 | Arrowhead | T-MOBILE USA, INC. |
| 909-345 | Diamond Bar | BANDWIDTH.COM CLEC, LLC - CA |
| 909-346 | Fontana | METROPCS NETWORKS, LLC |
| 909-347 | Fontana | BANDWIDTH.COM CLEC, LLC - CA |
FAQ
Where is 909-344 located?
The prefix is assigned to the Claremont rate center in CA, area code 909. It is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area.
Which company owns 909-344 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 909-344 safe to answer?
The prefix itself says nothing about the caller. Legitimate Claremont businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.