| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 633-41** | (510) 633-4100 - (510) 633-4199 | 59 |
| (510) 633-42** | (510) 633-4274 - (510) 633-4274 | 1 |
| (510) 633-43** | (510) 633-4300 - (510) 633-4377 | 3 |
| (510) 633-45** | (510) 633-4500 - (510) 633-4598 | 26 |
| (510) 633-46** | (510) 633-4600 - (510) 633-4640 | 3 |
| (510) 633-47** | (510) 633-4701 - (510) 633-4791 | 46 |
| (510) 633-48** | (510) 633-4801 - (510) 633-4897 | 70 |
| (510) 633-49** | (510) 633-4900 - (510) 633-4999 | 54 |
US Phone Directory: (510) 633-4***
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