| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 665-40** | (510) 665-4000 - (510) 665-4099 | 79 |
| (510) 665-41** | (510) 665-4100 - (510) 665-4199 | 81 |
| (510) 665-42** | (510) 665-4200 - (510) 665-4299 | 81 |
| (510) 665-43** | (510) 665-4300 - (510) 665-4399 | 85 |
| (510) 665-44** | (510) 665-4481 - (510) 665-4485 | 2 |
| (510) 665-45** | (510) 665-4500 - (510) 665-4599 | 79 |
| (510) 665-46** | (510) 665-4601 - (510) 665-4646 | 3 |
| (510) 665-47** | (510) 665-4700 - (510) 665-4799 | 79 |
| (510) 665-48** | (510) 665-4800 - (510) 665-4899 | 75 |
| (510) 665-49** | (510) 665-4909 - (510) 665-4928 | 2 |
US Phone Directory: (510) 665-4***
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