| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 543-50** | (415) 543-5000 - (415) 543-5095 | 31 |
| (415) 543-51** | (415) 543-5100 - (415) 543-5197 | 28 |
| (415) 543-52** | (415) 543-5200 - (415) 543-5298 | 30 |
| (415) 543-53** | (415) 543-5300 - (415) 543-5399 | 29 |
| (415) 543-54** | (415) 543-5400 - (415) 543-5496 | 38 |
| (415) 543-55** | (415) 543-5500 - (415) 543-5599 | 30 |
| (415) 543-56** | (415) 543-5600 - (415) 543-5694 | 25 |
| (415) 543-57** | (415) 543-5700 - (415) 543-5796 | 31 |
| (415) 543-58** | (415) 543-5804 - (415) 543-5899 | 22 |
| (415) 543-59** | (415) 543-5906 - (415) 543-5997 | 27 |
US Phone Directory: (415) 543-5***
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