| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 431-30** | (415) 431-3000 - (415) 431-3097 | 50 |
| (415) 431-31** | (415) 431-3100 - (415) 431-3198 | 60 |
| (415) 431-32** | (415) 431-3200 - (415) 431-3295 | 42 |
| (415) 431-33** | (415) 431-3300 - (415) 431-3398 | 48 |
| (415) 431-34** | (415) 431-3400 - (415) 431-3498 | 45 |
| (415) 431-35** | (415) 431-3500 - (415) 431-3599 | 43 |
| (415) 431-36** | (415) 431-3600 - (415) 431-3698 | 53 |
| (415) 431-37** | (415) 431-3700 - (415) 431-3798 | 48 |
| (415) 431-38** | (415) 431-3801 - (415) 431-3898 | 45 |
| (415) 431-39** | (415) 431-3900 - (415) 431-3993 | 41 |
US Phone Directory: (415) 431-3***
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