| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (925) 837-30** | (925) 837-3000 - (925) 837-3099 | 70 |
| (925) 837-31** | (925) 837-3100 - (925) 837-3198 | 72 |
| (925) 837-32** | (925) 837-3200 - (925) 837-3299 | 66 |
| (925) 837-33** | (925) 837-3300 - (925) 837-3399 | 77 |
| (925) 837-34** | (925) 837-3400 - (925) 837-3499 | 67 |
| (925) 837-35** | (925) 837-3500 - (925) 837-3599 | 62 |
| (925) 837-36** | (925) 837-3600 - (925) 837-3699 | 70 |
| (925) 837-37** | (925) 837-3700 - (925) 837-3798 | 71 |
| (925) 837-38** | (925) 837-3800 - (925) 837-3899 | 57 |
| (925) 837-39** | (925) 837-3900 - (925) 837-3999 | 72 |
US Phone Directory: (925) 837-3***
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