Prefix 408-440 — San Jose:south Da, CA
- Area code
- 408
- Prefix (NXX)
- 440
- Rate center
- San Jose:south Da
- State
- California
- Time zone
- Pacific
- Code holder
- COMCAST PHONE OF CALIFORNIA, LLC
- OCN
- 394L
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2006-12-11
- LATA
- 722
408-440 identifies a block of numbers in San Jose:south Da, CA, within the 408 area code. Every US prefix is tied to exactly one rate center; this one is San Jose:south Da.
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.
Treat the on-screen number as a hint, not evidence — 408-440 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
NANPA's central-office code records list COMCAST PHONE OF CALIFORNIA, LLC (OCN 394L) as the code holder, assigned December 11, 2006. Because 408-440 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 408-437 | San Jose:west Da | PACIFIC BELL |
| 408-438 | Los Gatos | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
| 408-439 | San Jose:west Da | NEW CINGULAR WIRELESS PCS, LLC |
| 408-441 | San Jose:west Da | PACIFIC BELL |
| 408-442 | Los Gatos | PEERLESS NETWORK OF CALIFORNIA, LLC - CA |
| 408-443 | Gilroy | ONVOY, LLC - CA |
FAQ
Where is 408-440 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 408-440 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 408-440 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.