| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 317-50** | (510) 317-5000 - (510) 317-5095 | 2 |
| (510) 317-51** | (510) 317-5100 - (510) 317-5190 | 2 |
| (510) 317-52** | (510) 317-5200 - (510) 317-5230 | 2 |
| (510) 317-53** | (510) 317-5300 - (510) 317-5301 | 2 |
| (510) 317-54** | (510) 317-5400 - (510) 317-5400 | 1 |
| (510) 317-55** | (510) 317-5500 - (510) 317-5500 | 1 |
| (510) 317-56** | (510) 317-5600 - (510) 317-5699 | 81 |
| (510) 317-57** | (510) 317-5700 - (510) 317-5798 | 86 |
| (510) 317-58** | (510) 317-5800 - (510) 317-5899 | 78 |
| (510) 317-59** | (510) 317-5900 - (510) 317-5999 | 77 |
US Phone Directory: (510) 317-5***
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