| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 564-40** | (510) 564-4000 - (510) 564-4099 | 78 |
| (510) 564-41** | (510) 564-4105 - (510) 564-4198 | 55 |
| (510) 564-42** | (510) 564-4210 - (510) 564-4299 | 66 |
| (510) 564-43** | (510) 564-4311 - (510) 564-4399 | 63 |
| (510) 564-44** | (510) 564-4410 - (510) 564-4496 | 65 |
| (510) 564-45** | (510) 564-4520 - (510) 564-4598 | 52 |
| (510) 564-46** | (510) 564-4603 - (510) 564-4698 | 57 |
| (510) 564-47** | (510) 564-4722 - (510) 564-4799 | 55 |
| (510) 564-48** | (510) 564-4818 - (510) 564-4869 | 4 |
| (510) 564-49** | (510) 564-4906 - (510) 564-4999 | 52 |
US Phone Directory: (510) 564-4***
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