| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 221-30** | (415) 221-3000 - (415) 221-3099 | 78 |
| (415) 221-31** | (415) 221-3100 - (415) 221-3199 | 78 |
| (415) 221-32** | (415) 221-3200 - (415) 221-3299 | 77 |
| (415) 221-33** | (415) 221-3300 - (415) 221-3398 | 72 |
| (415) 221-34** | (415) 221-3400 - (415) 221-3499 | 83 |
| (415) 221-35** | (415) 221-3500 - (415) 221-3599 | 79 |
| (415) 221-36** | (415) 221-3600 - (415) 221-3699 | 74 |
| (415) 221-37** | (415) 221-3700 - (415) 221-3799 | 76 |
| (415) 221-38** | (415) 221-3801 - (415) 221-3898 | 73 |
| (415) 221-39** | (415) 221-3900 - (415) 221-3997 | 82 |
US Phone Directory: (415) 221-3***
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