Prefix 909-377 — Upland, CA
The 909-377 prefix belongs to area code 909 and is anchored to the Upland rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Upland 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.
Code-holder of record: NEW CINGULAR WIRELESS PCS, LLC (OCN 6010), assigned December 3, 2015. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 909-377 numbers may be served by different companies.
Caller ID showing 909-377 is not proof the call came from Upland: 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 |
|---|---|---|
| 909-374 | Pomona | NEW CINGULAR WIRELESS PCS, LLC |
| 909-375 | Big Bear City | BANDWIDTH.COM CLEC, LLC - CA |
| 909-376 | Ontario | T-MOBILE USA, INC. |
| 909-378 | Diamond Bar | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA |
| 909-379 | San Bernardino | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA |
| 909-380 | San Bernardino | FRONTIER CALIFORNIA INC. |
FAQ
Where is 909-377 located?
The prefix is assigned to the Upland rate center in CA, area code 909. It is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area.
Which company owns 909-377 numbers?
NEW CINGULAR WIRELESS PCS, LLC 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 909-377 safe to answer?
The prefix itself says nothing about the caller. Legitimate Upland businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.