| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 921-30** | (415) 921-3000 - (415) 921-3099 | 57 |
| (415) 921-31** | (415) 921-3100 - (415) 921-3196 | 51 |
| (415) 921-32** | (415) 921-3200 - (415) 921-3299 | 68 |
| (415) 921-33** | (415) 921-3300 - (415) 921-3398 | 62 |
| (415) 921-34** | (415) 921-3400 - (415) 921-3499 | 61 |
| (415) 921-35** | (415) 921-3500 - (415) 921-3597 | 55 |
| (415) 921-36** | (415) 921-3600 - (415) 921-3699 | 59 |
| (415) 921-37** | (415) 921-3700 - (415) 921-3799 | 61 |
| (415) 921-38** | (415) 921-3800 - (415) 921-3894 | 54 |
| (415) 921-39** | (415) 921-3900 - (415) 921-3997 | 64 |
US Phone Directory: (415) 921-3***
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