Prefix 909-242 — Pomona, CA
909-242 identifies a block of numbers in Pomona, CA, within the 909 area code. Every US prefix is tied to exactly one rate center; this one is Pomona.
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 — 909-242 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 U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (OCN 671J) as the code holder, assigned March 21, 2007. Because 909-242 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 |
|---|---|---|
| 909-239 | Ontario | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 909-240 | Ontario | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 909-241 | Ontario | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 909-243 | Upland | METROPCS NETWORKS, LLC |
| 909-244 | Upland | T-MOBILE USA, INC. |
| 909-245 | Crestline | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
FAQ
Where is 909-242 located?
The prefix is assigned to the Pomona rate center in CA, area code 909. It is part of the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area.
Which company owns 909-242 numbers?
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 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 909-242 safe to answer?
The prefix itself says nothing about the caller. Legitimate Pomona businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.