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Crestline, CA Area Codes
Crestline, California (population 10,431) uses area codes 909 and 840.
Carriers with Crestline numbers
8 prefixes are assigned to the Crestline exchange: 13% mobile, 50% VoIP and cable, 38% landline.
| Carrier | Prefixes |
|---|---|
| Onvoy (Sinch) | 2 |
| Verizon Business (MCImetro) | 1 |
| Frontier | 1 |
| Tpx Communications | 1 |
| T-Mobile | 1 |
| Bandwidth | 1 |
| Fractel | 1 |
Area codes used in Crestline
| Area code | Prefixes serving Crestline | Main carriers in this code |
|---|---|---|
| 909 | 7 | Frontier, T-Mobile, AT&T Mobility |
| 840 | 1 | T-Mobile, Fractel, Onvoy (Sinch) |
Crestline phone number prefixes
Numbers starting with these first six digits were originally assigned to the Crestline exchange.
909-245Verizon Business (MCImetro)909-338Frontier909-487Tpx Communications909-589T-Mobile909-698Onvoy (Sinch)909-715Bandwidth909-897Onvoy (Sinch)840-688Fractel
Nearby cities in area code 909
- San Bernardino
- Fontana
- Ontario
- Rancho Cucamonga
- Pomona
- Rialto
- Chino
- Upland
- Chino Hills
- Redlands
- Eastvale
- Highland
Questions
- What is the area code for Crestline, CA?
- Crestline uses 2 area codes: 909 and 840. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Crestline in?
- Crestline is in the Pacific time zone.