| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 254-40** | (510) 254-4001 - (510) 254-4093 | 9 |
| (510) 254-41** | (510) 254-4100 - (510) 254-4198 | 7 |
| (510) 254-42** | (510) 254-4230 - (510) 254-4264 | 3 |
| (510) 254-43** | (510) 254-4385 - (510) 254-4385 | 1 |
| (510) 254-44** | (510) 254-4405 - (510) 254-4499 | 12 |
| (510) 254-45** | (510) 254-4504 - (510) 254-4573 | 8 |
| (510) 254-46** | (510) 254-4606 - (510) 254-4696 | 3 |
| (510) 254-47** | (510) 254-4733 - (510) 254-4794 | 6 |
| (510) 254-48** | (510) 254-4812 - (510) 254-4855 | 3 |
| (510) 254-49** | (510) 254-4905 - (510) 254-4992 | 6 |
US Phone Directory: (510) 254-4***
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