Prefix 408-599 — San Jose:south Da, CA

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

Area code
408
Prefix (NXX)
599
Rate center
San Jose:south Da
State
California
Time zone
Pacific
Code holder
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
OCN
6006
Pooled
Yes (thousands-block pooling)
Assigned
2009-09-11
LATA
722

The 408-599 prefix belongs to area code 408 and is anchored to the San Jose:south Da rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

San Jose:south 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.

Code-holder of record: CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (OCN 6006), assigned September 11, 2009. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 408-599 numbers may be served by different companies.

Caller ID showing 408-599 is not proof the call came from San Jose:south 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

Prefixes adjacent to 408-599
PrefixRate centerCode holder
408-596 Los Gatos NEW CINGULAR WIRELESS PCS, LLC
408-597 San Jose:north Da MCIMETRO ACCESS TRANSMISSION SERVICES LLC
408-598 Sunnyvale CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
408-600 San Jose:south Da T-MOBILE USA, INC.
408-601 San Jose:north Da BANDWIDTH.COM CLEC, LLC - CA
408-602 Salinas CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA

FAQ

Where is 408-599 located?

The prefix is assigned to the San Jose:south 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 408-599 numbers?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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 408-599 safe to answer?

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