| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (415) 921-00** | (415) 921-0000 - (415) 921-0055 | 3 |
| (415) 921-01** | (415) 921-0100 - (415) 921-0199 | 45 |
| (415) 921-02** | (415) 921-0200 - (415) 921-0299 | 54 |
| (415) 921-03** | (415) 921-0300 - (415) 921-0396 | 46 |
| (415) 921-04** | (415) 921-0400 - (415) 921-0499 | 53 |
| (415) 921-05** | (415) 921-0500 - (415) 921-0598 | 54 |
| (415) 921-06** | (415) 921-0600 - (415) 921-0699 | 65 |
| (415) 921-07** | (415) 921-0700 - (415) 921-0799 | 57 |
| (415) 921-08** | (415) 921-0800 - (415) 921-0897 | 55 |
| (415) 921-09** | (415) 921-0903 - (415) 921-0999 | 44 |
US Phone Directory: (415) 921-0***
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