Prefix 408-627 — San Jose:north Da, CA

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

Area code
408
Prefix (NXX)
627
Rate center
San Jose:north Da
State
California
Time zone
Pacific
Code holder
T-MOBILE USA, INC.
OCN
6529
Pooled
Yes (thousands-block pooling)
Assigned
2004-10-29
LATA
722

The 408-627 prefix belongs to area code 408 and is anchored to the San Jose:north Da rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

San Jose:north Da is part of the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area. For routing purposes it sits in LATA 722. Numbers here keep Pacific time.

Code-holder of record: T-MOBILE USA, INC. (OCN 6529), assigned October 29, 2004. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 408-627 numbers may be served by different companies.

Caller ID showing 408-627 is not proof the call came from San Jose:north 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 408-627
PrefixRate centerCode holder
408-624 San Jose:south Da LEVEL 3 COMMUNICATIONS, LLC - CA
408-625 San Jose:west Da LEVEL 3 COMMUNICATIONS, LLC - CA
408-626 Campbell PACIFIC BELL
408-628 Campbell LEVEL 3 COMMUNICATIONS, LLC - CA
408-629 San Jose:south Da PACIFIC BELL
408-630 San Jose:south Da PACIFIC BELL

FAQ

Where is 408-627 located?

The prefix is assigned to the San Jose:north Da rate center in CA, area code 408. It is part of the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area.

Which company owns 408-627 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 408-627 safe to answer?

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