| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 643-50** | (415) 643-5000 - (415) 643-5096 | 35 |
| (415) 643-51** | (415) 643-5100 - (415) 643-5197 | 30 |
| (415) 643-52** | (415) 643-5200 - (415) 643-5296 | 33 |
| (415) 643-53** | (415) 643-5300 - (415) 643-5397 | 40 |
| (415) 643-54** | (415) 643-5401 - (415) 643-5497 | 46 |
| (415) 643-55** | (415) 643-5500 - (415) 643-5599 | 50 |
| (415) 643-56** | (415) 643-5600 - (415) 643-5695 | 44 |
| (415) 643-57** | (415) 643-5700 - (415) 643-5798 | 40 |
| (415) 643-58** | (415) 643-5800 - (415) 643-5899 | 50 |
| (415) 643-59** | (415) 643-5900 - (415) 643-5999 | 37 |
US Phone Directory: (415) 643-5***
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