| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 532-50** | (510) 532-5000 - (510) 532-5098 | 73 |
| (510) 532-51** | (510) 532-5100 - (510) 532-5198 | 65 |
| (510) 532-52** | (510) 532-5202 - (510) 532-5299 | 65 |
| (510) 532-53** | (510) 532-5300 - (510) 532-5399 | 83 |
| (510) 532-54** | (510) 532-5400 - (510) 532-5499 | 86 |
| (510) 532-55** | (510) 532-5500 - (510) 532-5599 | 67 |
| (510) 532-56** | (510) 532-5600 - (510) 532-5699 | 78 |
| (510) 532-57** | (510) 532-5700 - (510) 532-5799 | 77 |
| (510) 532-58** | (510) 532-5800 - (510) 532-5898 | 80 |
| (510) 532-59** | (510) 532-5900 - (510) 532-5996 | 79 |
US Phone Directory: (510) 532-5***
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