Prefix 408-302 — San Jose:west Da, CA

NANPA CO code assignment, current as of July 28, 2026.

The 408-302 prefix belongs to area code 408 and is anchored to the San Jose:west Da rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

San Jose:west Da 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.

The assigned code holder is ONVOY, LLC - CA, operating company number 649C, assigned September 19, 2023. 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 408-302 is not proof the call came from San Jose:west Da: 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

FAQ

Where is 408-302 located?

The prefix is assigned to the San Jose:west Da rate center in CA, area code 408. It is part of the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area.

Which company owns 408-302 numbers?

ONVOY, LLC - CA 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 408-302 safe to answer?

The prefix itself says nothing about the caller. Legitimate San Jose:west Da businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.