| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (925) 387-50** | (925) 387-5000 - (925) 387-5095 | 45 |
| (925) 387-51** | (925) 387-5100 - (925) 387-5173 | 15 |
| (925) 387-52** | (925) 387-5200 - (925) 387-5208 | 2 |
| (925) 387-53** | (925) 387-5300 - (925) 387-5399 | 57 |
| (925) 387-54** | (925) 387-5401 - (925) 387-5459 | 10 |
| (925) 387-55** | (925) 387-5500 - (925) 387-5555 | 2 |
| (925) 387-59** | (925) 387-5904 - (925) 387-5994 | 5 |
US Phone Directory: (925) 387-5***
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