| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (650) 557-10** | (650) 557-1000 - (650) 557-1099 | 81 |
| (650) 557-11** | (650) 557-1101 - (650) 557-1198 | 80 |
| (650) 557-12** | (650) 557-1200 - (650) 557-1299 | 81 |
| (650) 557-13** | (650) 557-1301 - (650) 557-1399 | 81 |
| (650) 557-14** | (650) 557-1400 - (650) 557-1499 | 80 |
| (650) 557-15** | (650) 557-1500 - (650) 557-1599 | 84 |
| (650) 557-16** | (650) 557-1689 - (650) 557-1689 | 1 |
| (650) 557-17** | (650) 557-1700 - (650) 557-1757 | 5 |
US Phone Directory: (650) 557-1***
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