Prefix 408-685 — Sunnyvale, CA
The 408-685 prefix belongs to area code 408 and is anchored to the Sunnyvale rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Sunnyvale 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.
Code-holder of record: METROPCS, INC. (OCN 5562), assigned February 28, 2001. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 408-685 numbers may be served by different companies.
Caller ID showing 408-685 is not proof the call came from Sunnyvale: 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 |
|---|---|---|
| 408-682 | San Martin | PACIFIC BELL |
| 408-683 | San Martin | PACIFIC BELL |
| 408-684 | San Jose:north Da | LEVEL 3 COMMUNICATIONS, LLC - CA |
| 408-686 | San Martin | PACIFIC BELL |
| 408-687 | San Jose:north Da | METROPCS, INC. |
| 408-688 | Campbell | LEVEL 3 COMMUNICATIONS, LLC - CA |
FAQ
Where is 408-685 located?
The prefix is assigned to the Sunnyvale rate center in CA, area code 408. It is part of the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area.
Which company owns 408-685 numbers?
METROPCS, 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 408-685 safe to answer?
The prefix itself says nothing about the caller. Legitimate Sunnyvale businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.