- City / exchange
- Fontana
- Province / state
- California
- Country
- United States
- Carrier
- Onvoy, LLC - CA
- Line type
- Likely VoIP / virtual number
- OCN
- 649C
- Status
- In Service
- Assigned
- 09/19/2025
- Number pooling
- Yes (block shared between carriers)
840-285 phone numbers
Fontana, California, United States · Onvoy, LLC - CA
Reported numbers in 840-285
No numbers in this block have been reported by visitors yet.
What does the 840-285 prefix tell you?
Every North American number is area code + prefix + line. The prefix 840-285 was assigned to Onvoy, LLC - CA on 09/19/2025 for the Fontana exchange. A call from this block usually originates from a Onvoy, LLC - CA customer in or near Fontana, but caller ID can be spoofed to show any number.