(840) 400
Prefix in ONTARIO, California
Prefix Details
| Area Code | 840 |
| Prefix | 400 |
| Full Number Pattern | (840) 400-XXXX |
| Rate Center | ONTARIO |
| State | California |
| Operating Company | FRACTEL, LLC |
| Time Zone | Pacific (PT, UTC-8) |
About the (840) 400 Prefix
The (840) 400 prefix is assigned to FRACTEL, LLC and serves the ONTARIO rate center in California. Phone numbers with this prefix are in the Pacific Time Zone and are part of area code 840 which covers San Bernardino and surrounding areas.