| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 825-50** | (510) 825-5000 - (510) 825-5097 | 25 |
| (510) 825-51** | (510) 825-5102 - (510) 825-5193 | 26 |
| (510) 825-52** | (510) 825-5204 - (510) 825-5291 | 23 |
| (510) 825-53** | (510) 825-5304 - (510) 825-5394 | 28 |
| (510) 825-54** | (510) 825-5406 - (510) 825-5494 | 24 |
| (510) 825-55** | (510) 825-5501 - (510) 825-5597 | 29 |
| (510) 825-56** | (510) 825-5601 - (510) 825-5693 | 23 |
| (510) 825-57** | (510) 825-5702 - (510) 825-5788 | 35 |
| (510) 825-58** | (510) 825-5800 - (510) 825-5899 | 27 |
| (510) 825-59** | (510) 825-5909 - (510) 825-5998 | 23 |
US Phone Directory: (510) 825-5***
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