Prefix 408-680 — Campbell, CA

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

Area code
408
Prefix (NXX)
680
Rate center
Campbell
State
California
Time zone
Pacific
Code holder
T-MOBILE USA, INC.
OCN
6529
Pooled
Yes (thousands-block pooling)
Assigned
2011-01-26
LATA
722

Numbers in the 408-680 prefix are registered to the Campbell rate center in CA, inside area code 408. The prefix is the second block of a ten-digit US number (408-680-XXXX) and pins the number to a billing locality.

Code-holder of record: T-MOBILE USA, INC. (OCN 6529), assigned January 26, 2011. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 408-680 numbers may be served by different companies.

The rate center lies in the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area. The serving LATA is 722. Local time follows the Pacific zone.

Spoofing means this prefix on your screen doesn't guarantee a Campbell caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 408-680
PrefixRate centerCode holder
408-677 San Jose:south Da T-MOBILE USA, INC.
408-678 San Jose:north Da TELEPORT COMMUNICATIONS AMERICA, LLC - CA
408-679 Campbell NEW CINGULAR WIRELESS PCS, LLC
408-681 San Martin PACIFIC BELL
408-682 San Martin PACIFIC BELL
408-683 San Martin PACIFIC BELL

FAQ

Where is 408-680 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 408-680 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 408-680 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.