Prefix 408-638 — San Jose:west Da, CA
- Area code
- 408
- Prefix (NXX)
- 638
- Rate center
- San Jose:west Da
- State
- California
- Time zone
- Pacific
- Code holder
- METROPCS, INC.
- OCN
- 5562
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2011-11-17
- LATA
- 722
The 408-638 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.
Code-holder of record: METROPCS, INC. (OCN 5562), assigned November 17, 2011. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 408-638 numbers may be served by different companies.
Caller ID showing 408-638 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
| Prefix | Rate center | Code holder |
|---|---|---|
| 408-635 | San Jose:north Da | PACIFIC BELL |
| 408-636 | Sunnyvale | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 408-637 | Campbell | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
| 408-639 | San Jose:west Da | T-MOBILE USA, INC. |
| 408-640 | San Jose:west Da | METROPCS, INC. |
| 408-641 | San Jose:west Da | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
FAQ
Where is 408-638 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 408-638 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 408-638 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.