| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 221-40** | (415) 221-4000 - (415) 221-4099 | 56 |
| (415) 221-41** | (415) 221-4100 - (415) 221-4199 | 60 |
| (415) 221-42** | (415) 221-4200 - (415) 221-4293 | 66 |
| (415) 221-43** | (415) 221-4301 - (415) 221-4399 | 66 |
| (415) 221-44** | (415) 221-4400 - (415) 221-4499 | 66 |
| (415) 221-45** | (415) 221-4500 - (415) 221-4597 | 60 |
| (415) 221-46** | (415) 221-4600 - (415) 221-4699 | 53 |
| (415) 221-47** | (415) 221-4700 - (415) 221-4799 | 49 |
| (415) 221-48** | (415) 221-4800 - (415) 221-4899 | 71 |
| (415) 221-49** | (415) 221-4900 - (415) 221-4999 | 66 |
US Phone Directory: (415) 221-4***
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