Prefix 408-429 — Campbell, CA
A phone number starting 408-429 was issued in the Campbell rate center of CA — part of area code 408.
The assigned code holder is T-MOBILE USA, INC., operating company number 6529, assigned September 19, 2002. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
A scammer can display 408-429 without ever touching CA. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.
Campbell is part of the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area. For routing purposes it sits in LATA 722. Numbers here keep Pacific time.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 408-426 | Campbell | T-MOBILE USA, INC. |
| 408-427 | Gilroy | TELEPORT COMMUNICATIONS AMERICA, LLC - CA |
| 408-428 | San Jose:north Da | PACIFIC BELL |
| 408-430 | Gilroy | BANDWIDTH.COM CLEC, LLC - CA |
| 408-431 | Sunnyvale | NEW CINGULAR WIRELESS PCS, LLC |
| 408-432 | San Jose:north Da | PACIFIC BELL |
FAQ
Where is 408-429 located?
The prefix is assigned to the Campbell rate center in CA, area code 408. It is part of the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area.
Which company owns 408-429 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 408-429 safe to answer?
The prefix itself says nothing about the caller. Legitimate Campbell businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.