| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 638-70** | (510) 638-7001 - (510) 638-7099 | 76 |
| (510) 638-71** | (510) 638-7100 - (510) 638-7199 | 68 |
| (510) 638-72** | (510) 638-7200 - (510) 638-7299 | 78 |
| (510) 638-73** | (510) 638-7301 - (510) 638-7399 | 73 |
| (510) 638-74** | (510) 638-7400 - (510) 638-7498 | 72 |
| (510) 638-75** | (510) 638-7500 - (510) 638-7599 | 71 |
| (510) 638-76** | (510) 638-7600 - (510) 638-7699 | 69 |
| (510) 638-77** | (510) 638-7700 - (510) 638-7799 | 60 |
| (510) 638-78** | (510) 638-7800 - (510) 638-7899 | 75 |
| (510) 638-79** | (510) 638-7900 - (510) 638-7998 | 75 |
US Phone Directory: (510) 638-7***
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