| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 238-10** | (510) 238-1000 - (510) 238-1071 | 6 |
| (510) 238-11** | (510) 238-1100 - (510) 238-1198 | 51 |
| (510) 238-12** | (510) 238-1200 - (510) 238-1238 | 3 |
| (510) 238-13** | (510) 238-1300 - (510) 238-1388 | 8 |
| (510) 238-14** | (510) 238-1400 - (510) 238-1461 | 3 |
| (510) 238-15** | (510) 238-1500 - (510) 238-1536 | 4 |
| (510) 238-16** | (510) 238-1613 - (510) 238-1670 | 4 |
| (510) 238-17** | (510) 238-1752 - (510) 238-1788 | 2 |
| (510) 238-18** | (510) 238-1832 - (510) 238-1898 | 2 |
| (510) 238-19** | (510) 238-1900 - (510) 238-1921 | 2 |
US Phone Directory: (510) 238-1***
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