| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 581-60** | (510) 581-6000 - (510) 581-6099 | 66 |
| (510) 581-61** | (510) 581-6100 - (510) 581-6197 | 68 |
| (510) 581-62** | (510) 581-6200 - (510) 581-6299 | 81 |
| (510) 581-63** | (510) 581-6301 - (510) 581-6399 | 72 |
| (510) 581-64** | (510) 581-6400 - (510) 581-6499 | 77 |
| (510) 581-65** | (510) 581-6500 - (510) 581-6599 | 59 |
| (510) 581-66** | (510) 581-6600 - (510) 581-6699 | 67 |
| (510) 581-67** | (510) 581-6700 - (510) 581-6799 | 72 |
| (510) 581-68** | (510) 581-6800 - (510) 581-6898 | 70 |
| (510) 581-69** | (510) 581-6900 - (510) 581-6999 | 72 |
US Phone Directory: (510) 581-6***
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