| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 531-60** | (510) 531-6000 - (510) 531-6099 | 74 |
| (510) 531-61** | (510) 531-6100 - (510) 531-6199 | 79 |
| (510) 531-62** | (510) 531-6200 - (510) 531-6298 | 82 |
| (510) 531-63** | (510) 531-6300 - (510) 531-6399 | 79 |
| (510) 531-64** | (510) 531-6400 - (510) 531-6499 | 75 |
| (510) 531-65** | (510) 531-6500 - (510) 531-6599 | 78 |
| (510) 531-66** | (510) 531-6600 - (510) 531-6699 | 83 |
| (510) 531-67** | (510) 531-6700 - (510) 531-6799 | 80 |
| (510) 531-68** | (510) 531-6800 - (510) 531-6899 | 80 |
| (510) 531-69** | (510) 531-6900 - (510) 531-6999 | 79 |
US Phone Directory: (510) 531-6***
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