| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 642-40** | (510) 642-4000 - (510) 642-4096 | 14 |
| (510) 642-41** | (510) 642-4104 - (510) 642-4193 | 10 |
| (510) 642-42** | (510) 642-4208 - (510) 642-4290 | 12 |
| (510) 642-43** | (510) 642-4304 - (510) 642-4393 | 5 |
| (510) 642-44** | (510) 642-4417 - (510) 642-4491 | 10 |
| (510) 642-45** | (510) 642-4502 - (510) 642-4599 | 11 |
| (510) 642-46** | (510) 642-4601 - (510) 642-4691 | 7 |
| (510) 642-47** | (510) 642-4705 - (510) 642-4786 | 12 |
| (510) 642-48** | (510) 642-4800 - (510) 642-4895 | 9 |
| (510) 642-49** | (510) 642-4909 - (510) 642-4998 | 13 |
US Phone Directory: (510) 642-4***
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