Prefix 408-498 — Sunnyvale, CA
The 408-498 prefix belongs to area code 408 and is anchored to the Sunnyvale rate center (CA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Sunnyvale 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 COMCAST PHONE OF CALIFORNIA, LLC, operating company number 394L, assigned July 29, 2011. 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 408-498 is not proof the call came from Sunnyvale: 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 |
|---|---|---|
| 408-495 | San Jose:west Da | PACIFIC BELL |
| 408-496 | San Jose:west Da | PACIFIC BELL |
| 408-497 | San Jose:west Da | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 408-499 | San Jose:west Da | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 408-500 | Morgan Hill | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 408-501 | San Jose:west Da | PACIFIC BELL |
FAQ
Where is 408-498 located?
The prefix is assigned to the Sunnyvale rate center in CA, area code 408. It is part of the San Jose-Sunnyvale-Santa Clara, CA Metropolitan Statistical Area.
Which company owns 408-498 numbers?
COMCAST PHONE OF CALIFORNIA, LLC 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 408-498 safe to answer?
The prefix itself says nothing about the caller. Legitimate Sunnyvale businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.