| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 644-30** | (510) 644-3000 - (510) 644-3099 | 55 |
| (510) 644-31** | (510) 644-3100 - (510) 644-3199 | 69 |
| (510) 644-32** | (510) 644-3200 - (510) 644-3298 | 57 |
| (510) 644-33** | (510) 644-3300 - (510) 644-3399 | 63 |
| (510) 644-34** | (510) 644-3400 - (510) 644-3499 | 60 |
| (510) 644-35** | (510) 644-3500 - (510) 644-3598 | 61 |
| (510) 644-36** | (510) 644-3600 - (510) 644-3699 | 59 |
| (510) 644-37** | (510) 644-3701 - (510) 644-3795 | 62 |
| (510) 644-38** | (510) 644-3800 - (510) 644-3898 | 70 |
| (510) 644-39** | (510) 644-3900 - (510) 644-3999 | 58 |
US Phone Directory: (510) 644-3***
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