| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 387-50** | (510) 387-5000 - (510) 387-5046 | 5 |
| (510) 387-51** | (510) 387-5117 - (510) 387-5185 | 7 |
| (510) 387-52** | (510) 387-5206 - (510) 387-5296 | 8 |
| (510) 387-53** | (510) 387-5363 - (510) 387-5385 | 3 |
| (510) 387-54** | (510) 387-5405 - (510) 387-5487 | 4 |
| (510) 387-55** | (510) 387-5518 - (510) 387-5599 | 3 |
| (510) 387-56** | (510) 387-5612 - (510) 387-5684 | 4 |
| (510) 387-57** | (510) 387-5752 - (510) 387-5790 | 4 |
| (510) 387-58** | (510) 387-5865 - (510) 387-5899 | 2 |
| (510) 387-59** | (510) 387-5933 - (510) 387-5996 | 11 |
US Phone Directory: (510) 387-5***
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