| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 731-30** | (415) 731-3000 - (415) 731-3098 | 68 |
| (415) 731-31** | (415) 731-3100 - (415) 731-3199 | 78 |
| (415) 731-32** | (415) 731-3201 - (415) 731-3298 | 70 |
| (415) 731-33** | (415) 731-3300 - (415) 731-3399 | 71 |
| (415) 731-34** | (415) 731-3401 - (415) 731-3499 | 67 |
| (415) 731-35** | (415) 731-3501 - (415) 731-3599 | 58 |
| (415) 731-36** | (415) 731-3601 - (415) 731-3698 | 72 |
| (415) 731-37** | (415) 731-3700 - (415) 731-3799 | 75 |
| (415) 731-38** | (415) 731-3800 - (415) 731-3899 | 78 |
| (415) 731-39** | (415) 731-3900 - (415) 731-3999 | 67 |
US Phone Directory: (415) 731-3***
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