| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (650) 678-50** | (650) 678-5003 - (650) 678-5099 | 49 |
| (650) 678-51** | (650) 678-5100 - (650) 678-5199 | 35 |
| (650) 678-52** | (650) 678-5201 - (650) 678-5299 | 37 |
| (650) 678-53** | (650) 678-5300 - (650) 678-5399 | 25 |
| (650) 678-54** | (650) 678-5401 - (650) 678-5499 | 37 |
| (650) 678-55** | (650) 678-5503 - (650) 678-5599 | 36 |
| (650) 678-56** | (650) 678-5605 - (650) 678-5699 | 40 |
| (650) 678-57** | (650) 678-5702 - (650) 678-5797 | 27 |
| (650) 678-58** | (650) 678-5814 - (650) 678-5899 | 26 |
| (650) 678-59** | (650) 678-5900 - (650) 678-5998 | 32 |
US Phone Directory: (650) 678-5***
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