| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 577-90** | (510) 577-9000 - (510) 577-9038 | 3 |
| (510) 577-91** | (510) 577-9100 - (510) 577-9168 | 2 |
| (510) 577-94** | (510) 577-9470 - (510) 577-9471 | 2 |
| (510) 577-95** | (510) 577-9500 - (510) 577-9599 | 51 |
| (510) 577-96** | (510) 577-9600 - (510) 577-9699 | 53 |
US Phone Directory: (510) 577-9***
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