| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 644-40** | (510) 644-4054 - (510) 644-4069 | 2 |
| (510) 644-41** | (510) 644-4118 - (510) 644-4196 | 7 |
| (510) 644-42** | (510) 644-4205 - (510) 644-4274 | 14 |
| (510) 644-43** | (510) 644-4375 - (510) 644-4375 | 1 |
| (510) 644-44** | (510) 644-4400 - (510) 644-4499 | 65 |
| (510) 644-45** | (510) 644-4500 - (510) 644-4575 | 2 |
| (510) 644-46** | (510) 644-4606 - (510) 644-4685 | 3 |
| (510) 644-47** | (510) 644-4700 - (510) 644-4717 | 2 |
| (510) 644-48** | (510) 644-4822 - (510) 644-4869 | 5 |
| (510) 644-49** | (510) 644-4902 - (510) 644-4998 | 28 |
US Phone Directory: (510) 644-4***
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