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San Ramon, CA Area Code
San Ramon, California (population 86,209) uses area code 925.
San Ramon has no telephone exchange of its own in NANPA records; it is served by the Danville exchange about 6.2 km away.
Carriers with San Ramon numbers
38 prefixes are assigned to the Danville exchange: 16% mobile, 29% VoIP and cable, 55% landline.
| Carrier | Prefixes |
|---|---|
| AT&T (Pacific Bell) | 12 |
| Lumen (Level 3) | 4 |
| AT&T Mobility | 4 |
| Verizon Business (MCImetro) | 4 |
| Metropcs | 3 |
| Tpx Communications | 3 |
| T-Mobile | 2 |
| Onvoy (Sinch) | 2 |
Area codes used in San Ramon
| Area code | Prefixes serving San Ramon | Main carriers in this code |
|---|---|---|
| 925 | 38 | AT&T (Pacific Bell), AT&T Mobility, Verizon Business (MCImetro) |
San Ramon phone number prefixes
Numbers starting with these first six digits were originally assigned to the Danville exchange.
925-205T-Mobile925-208AT&T (Teleport)925-217Lumen (Level 3)925-263Lumen (Level 3)925-272Lumen (Level 3)925-309Lumen (Level 3)925-314AT&T (Pacific Bell)925-345American Messaging Services925-362AT&T (Pacific Bell)925-389AT&T Mobility925-406Verizon Business (MCImetro)925-486Onvoy (Sinch)925-502AT&T Mobility925-540AT&T Mobility925-552AT&T (Pacific Bell)925-553Verizon Business (MCImetro)925-575Metropcs925-594Metropcs925-648AT&T (Pacific Bell)925-678Tpx Communications925-683AT&T Mobility925-718Onvoy (Sinch)925-725Tpx Communications925-733Fractel925-736AT&T (Pacific Bell)925-743AT&T (Pacific Bell)925-791Tpx Communications925-820AT&T (Pacific Bell)925-831AT&T (Pacific Bell)925-837AT&T (Pacific Bell)925-838AT&T (Pacific Bell)925-854Verizon Business (MCImetro)925-855AT&T (Pacific Bell)925-856Verizon Business (MCImetro)925-886Matrix Telecom. S/I/I Tnci925-915T-Mobile925-964AT&T (Pacific Bell)925-984Metropcs
Nearby cities in area code 925
Questions
- What is the area code for San Ramon, CA?
- The area code for San Ramon, California is 925.
- What time zone is San Ramon in?
- San Ramon is in the Pacific time zone.