| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (510) 489-10** | (510) 489-1000 - (510) 489-1099 | 63 |
| (510) 489-11** | (510) 489-1100 - (510) 489-1197 | 59 |
| (510) 489-12** | (510) 489-1200 - (510) 489-1299 | 57 |
| (510) 489-13** | (510) 489-1304 - (510) 489-1399 | 43 |
| (510) 489-14** | (510) 489-1400 - (510) 489-1498 | 56 |
| (510) 489-15** | (510) 489-1500 - (510) 489-1598 | 60 |
| (510) 489-16** | (510) 489-1600 - (510) 489-1699 | 42 |
| (510) 489-17** | (510) 489-1701 - (510) 489-1798 | 47 |
| (510) 489-18** | (510) 489-1800 - (510) 489-1899 | 61 |
| (510) 489-19** | (510) 489-1900 - (510) 489-1997 | 53 |
US Phone Directory: (510) 489-1***
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